/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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:39:37,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:39:37,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:39:37,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:39:37,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:39:37,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:39:37,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:39:37,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:39:37,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:39:37,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:39:37,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:39:37,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:39:37,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:39:37,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:39:37,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:39:37,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:39:37,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:39:37,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:39:37,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:39:37,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:39:37,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:39:37,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:39:37,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:39:37,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:39:37,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:39:37,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:39:37,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:39:37,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:39:37,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:39:37,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:39:37,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:39:37,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:39:37,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:39:37,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:39:37,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:39:37,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:39:37,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:39:37,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:39:37,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:39:37,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:39:37,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:39:37,299 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 18:39:37,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:39:37,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:39:37,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:39:37,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:39:37,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:39:37,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:39:37,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:39:37,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:39:37,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:39:37,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:39:37,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:39:37,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:39:37,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:39:37,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:39:37,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:39:37,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:39:37,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:39:37,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:39:37,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:39:37,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:39:37,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:39:37,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:39:37,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:39:37,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:39:37,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:39:37,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:39:37,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:39:37,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:39:37,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:39:37,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:39:37,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:39:37,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:39:37,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:39:37,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:39:37,817 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:39:37,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24.c [2020-10-27 18:39:37,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607aa8cab/f755ee0847614446be3301fd4480f0e8/FLAGdc33a307e [2020-10-27 18:39:38,799 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:39:38,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label24.c [2020-10-27 18:39:38,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607aa8cab/f755ee0847614446be3301fd4480f0e8/FLAGdc33a307e [2020-10-27 18:39:38,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607aa8cab/f755ee0847614446be3301fd4480f0e8 [2020-10-27 18:39:38,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:39:38,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:39:38,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:39:38,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:39:38,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:39:39,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:39:38" (1/1) ... [2020-10-27 18:39:39,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:39, skipping insertion in model container [2020-10-27 18:39:39,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:39:38" (1/1) ... [2020-10-27 18:39:39,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:39:39,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:39:39,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:39:39,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:39:40,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:39:40,294 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:39:40,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40 WrapperNode [2020-10-27 18:39:40,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:39:40,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:39:40,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:39:40,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:39:40,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (1/1) ... [2020-10-27 18:39:40,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (1/1) ... [2020-10-27 18:39:40,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (1/1) ... [2020-10-27 18:39:40,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (1/1) ... [2020-10-27 18:39:40,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (1/1) ... [2020-10-27 18:39:40,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (1/1) ... [2020-10-27 18:39:40,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (1/1) ... [2020-10-27 18:39:40,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:39:40,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:39:40,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:39:40,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:39:40,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (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 18:39:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:39:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:39:40,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:39:40,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:39:40,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:39:40,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:39:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:39:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:39:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:39:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:39:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:39:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:39:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:39:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:39:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:39:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:39:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:39:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:39:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:39:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:39:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:39:43,297 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:39:43,297 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:39:43,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:39:43 BoogieIcfgContainer [2020-10-27 18:39:43,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:39:43,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:39:43,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:39:43,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:39:43,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:39:38" (1/3) ... [2020-10-27 18:39:43,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec3f76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:39:43, skipping insertion in model container [2020-10-27 18:39:43,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:39:40" (2/3) ... [2020-10-27 18:39:43,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec3f76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:39:43, skipping insertion in model container [2020-10-27 18:39:43,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:39:43" (3/3) ... [2020-10-27 18:39:43,310 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label24.c [2020-10-27 18:39:43,322 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:39:43,328 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:39:43,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:39:43,393 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:39:43,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:39:43,394 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:39:43,394 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:39:43,394 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:39:43,394 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:39:43,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:39:43,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:39:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:39:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 18:39:43,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:43,460 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] [2020-10-27 18:39:43,460 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:43,471 INFO L82 PathProgramCache]: Analyzing trace with hash -378955708, now seen corresponding path program 1 times [2020-10-27 18:39:43,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:43,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947672614] [2020-10-27 18:39:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:44,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 18:39:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-27 18:39:44,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:39:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:39:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 18:39:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:39:44,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:44,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:44,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:44,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:39:44,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:44,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:39:44,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:44,591 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 18:39:44,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947672614] [2020-10-27 18:39:44,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:39:44,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:39:44,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889378492] [2020-10-27 18:39:44,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:39:44,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:44,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:39:44,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:39:44,620 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 18:39:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:52,263 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-27 18:39:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:39:52,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-27 18:39:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:52,302 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 18:39:52,303 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 18:39:52,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:39:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 18:39:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 18:39:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 18:39:52,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-27 18:39:52,499 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 59 [2020-10-27 18:39:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:52,501 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-27 18:39:52,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:39:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-27 18:39:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 18:39:52,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:52,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:52,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:39:52,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1060886395, now seen corresponding path program 1 times [2020-10-27 18:39:52,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:52,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113847593] [2020-10-27 18:39:52,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:53,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:53,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 18:39:53,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:39:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1370 [2020-10-27 18:39:53,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:39:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:39:53,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 18:39:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:39:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:39:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:39:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 18:39:54,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:39:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:39:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:39:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:39:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:54,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:39:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:39:54,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:39:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 18:39:54,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:39:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:39:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:39:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:39:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:39:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:39:54,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113847593] [2020-10-27 18:39:54,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:39:54,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:39:54,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335420860] [2020-10-27 18:39:54,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:39:54,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:39:54,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:39:54,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:39:54,421 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 5 states. [2020-10-27 18:39:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:39:59,256 INFO L93 Difference]: Finished difference Result 2410 states and 3595 transitions. [2020-10-27 18:39:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:39:59,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-10-27 18:39:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:39:59,268 INFO L225 Difference]: With dead ends: 2410 [2020-10-27 18:39:59,268 INFO L226 Difference]: Without dead ends: 1381 [2020-10-27 18:39:59,271 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 18:39:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2020-10-27 18:39:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1377. [2020-10-27 18:39:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2020-10-27 18:39:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1901 transitions. [2020-10-27 18:39:59,321 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1901 transitions. Word has length 135 [2020-10-27 18:39:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:39:59,322 INFO L481 AbstractCegarLoop]: Abstraction has 1377 states and 1901 transitions. [2020-10-27 18:39:59,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:39:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1901 transitions. [2020-10-27 18:39:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-27 18:39:59,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:39:59,328 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, 2, 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 18:39:59,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:39:59,329 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:39:59,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:39:59,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1418840374, now seen corresponding path program 1 times [2020-10-27 18:39:59,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:39:59,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014173342] [2020-10-27 18:39:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:39:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:39:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:39:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:00,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:04,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:04,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-27 18:40:04,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:40:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 18:40:04,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 198 [2020-10-27 18:40:04,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 18:40:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:04,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:04,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:40:04,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:04,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:04,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:40:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:04,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:04,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:40:04,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:40:04,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 18:40:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:04,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:04,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:04,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:40:04,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:04,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 18:40:04,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:04,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:40:04,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 18:40:05,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014173342] [2020-10-27 18:40:05,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:05,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:40:05,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557358851] [2020-10-27 18:40:05,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:40:05,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:05,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:40:05,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:40:05,009 INFO L87 Difference]: Start difference. First operand 1377 states and 1901 transitions. Second operand 5 states. [2020-10-27 18:40:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:09,719 INFO L93 Difference]: Finished difference Result 4114 states and 5743 transitions. [2020-10-27 18:40:09,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:40:09,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-27 18:40:09,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:09,737 INFO L225 Difference]: With dead ends: 4114 [2020-10-27 18:40:09,738 INFO L226 Difference]: Without dead ends: 2743 [2020-10-27 18:40:09,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 18:40:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2020-10-27 18:40:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 2739. [2020-10-27 18:40:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2020-10-27 18:40:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3448 transitions. [2020-10-27 18:40:09,833 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3448 transitions. Word has length 245 [2020-10-27 18:40:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:09,833 INFO L481 AbstractCegarLoop]: Abstraction has 2739 states and 3448 transitions. [2020-10-27 18:40:09,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:40:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3448 transitions. [2020-10-27 18:40:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-27 18:40:09,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:09,846 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:40:09,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:40:09,847 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:09,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:09,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1184335918, now seen corresponding path program 1 times [2020-10-27 18:40:09,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:09,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979755790] [2020-10-27 18:40:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:10,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:10,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-27 18:40:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:40:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 18:40:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-27 18:40:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:40:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:15,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:40:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:15,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:15,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:40:15,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:15,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:40:15,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:15,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:15,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:40:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:40:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:40:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:40:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:15,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:15,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:40:15,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 18:40:15,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:15,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:40:15,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:15,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 18:40:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:15,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:15,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:40:15,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:40:15,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:40:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 421 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-27 18:40:15,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979755790] [2020-10-27 18:40:15,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:15,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:40:15,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658650377] [2020-10-27 18:40:15,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:40:15,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:15,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:40:15,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:40:15,927 INFO L87 Difference]: Start difference. First operand 2739 states and 3448 transitions. Second operand 7 states. [2020-10-27 18:40:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:21,459 INFO L93 Difference]: Finished difference Result 6209 states and 8055 transitions. [2020-10-27 18:40:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:40:21,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 415 [2020-10-27 18:40:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:21,484 INFO L225 Difference]: With dead ends: 6209 [2020-10-27 18:40:21,484 INFO L226 Difference]: Without dead ends: 3476 [2020-10-27 18:40:21,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:40:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2020-10-27 18:40:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3462. [2020-10-27 18:40:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3462 states. [2020-10-27 18:40:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4295 transitions. [2020-10-27 18:40:21,646 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4295 transitions. Word has length 415 [2020-10-27 18:40:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:21,647 INFO L481 AbstractCegarLoop]: Abstraction has 3462 states and 4295 transitions. [2020-10-27 18:40:21,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:40:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4295 transitions. [2020-10-27 18:40:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-27 18:40:21,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:21,660 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:40:21,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:40:21,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:21,661 INFO L82 PathProgramCache]: Analyzing trace with hash 407987664, now seen corresponding path program 1 times [2020-10-27 18:40:21,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:21,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385257614] [2020-10-27 18:40:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:23,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-27 18:40:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:40:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 18:40:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:40:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 18:40:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:26,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:26,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:40:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:27,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:40:27,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:27,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:40:27,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:27,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:27,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:27,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:40:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:27,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:40:27,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:27,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-27 18:40:27,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:40:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:40:27,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385257614] [2020-10-27 18:40:27,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:27,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:40:27,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467319445] [2020-10-27 18:40:27,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:40:27,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:27,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:40:27,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:40:27,733 INFO L87 Difference]: Start difference. First operand 3462 states and 4295 transitions. Second operand 5 states. [2020-10-27 18:40:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:32,847 INFO L93 Difference]: Finished difference Result 8970 states and 11303 transitions. [2020-10-27 18:40:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:40:32,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 423 [2020-10-27 18:40:32,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:32,884 INFO L225 Difference]: With dead ends: 8970 [2020-10-27 18:40:32,884 INFO L226 Difference]: Without dead ends: 5514 [2020-10-27 18:40:32,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 18:40:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2020-10-27 18:40:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 4497. [2020-10-27 18:40:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4497 states. [2020-10-27 18:40:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5673 transitions. [2020-10-27 18:40:33,048 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5673 transitions. Word has length 423 [2020-10-27 18:40:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:33,049 INFO L481 AbstractCegarLoop]: Abstraction has 4497 states and 5673 transitions. [2020-10-27 18:40:33,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:40:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5673 transitions. [2020-10-27 18:40:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-27 18:40:33,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:33,068 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 18:40:33,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:40:33,068 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:33,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1039574971, now seen corresponding path program 1 times [2020-10-27 18:40:33,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:33,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815936081] [2020-10-27 18:40:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-27 18:40:38,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:40:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 18:40:38,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:40:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:40:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:38,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:38,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:38,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:38,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:38,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:40:38,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:38,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:38,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:40:38,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:40:38,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:38,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:40:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:38,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:38,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:40:38,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:38,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-27 18:40:38,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:40:38,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:40:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:39,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:39,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:40:39,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 18:40:39,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 18:40:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:40:39,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815936081] [2020-10-27 18:40:39,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:39,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:40:39,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280913201] [2020-10-27 18:40:39,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:40:39,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:39,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:40:39,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:40:39,526 INFO L87 Difference]: Start difference. First operand 4497 states and 5673 transitions. Second operand 7 states. [2020-10-27 18:40:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:45,271 INFO L93 Difference]: Finished difference Result 10763 states and 13927 transitions. [2020-10-27 18:40:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:40:45,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 524 [2020-10-27 18:40:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:45,313 INFO L225 Difference]: With dead ends: 10763 [2020-10-27 18:40:45,313 INFO L226 Difference]: Without dead ends: 6272 [2020-10-27 18:40:45,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:40:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2020-10-27 18:40:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 6252. [2020-10-27 18:40:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6252 states. [2020-10-27 18:40:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 7550 transitions. [2020-10-27 18:40:45,528 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 7550 transitions. Word has length 524 [2020-10-27 18:40:45,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:45,530 INFO L481 AbstractCegarLoop]: Abstraction has 6252 states and 7550 transitions. [2020-10-27 18:40:45,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:40:45,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 7550 transitions. [2020-10-27 18:40:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-27 18:40:45,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:45,561 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-10-27 18:40:45,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:40:45,562 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:45,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:45,563 INFO L82 PathProgramCache]: Analyzing trace with hash 174747958, now seen corresponding path program 1 times [2020-10-27 18:40:45,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:45,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617872422] [2020-10-27 18:40:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:46,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:50,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:50,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 579 [2020-10-27 18:40:50,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:40:50,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 18:40:50,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 298 [2020-10-27 18:40:50,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-27 18:40:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:40:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:50,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:50,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:40:50,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:50,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:40:50,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:50,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:40:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:50,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:50,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:40:50,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:40:50,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:50,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:40:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:50,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:50,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:40:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:40:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:40:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:40:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:50,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:40:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:51,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:51,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:40:51,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:51,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 18:40:51,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:40:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:40:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:40:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:40:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 18:40:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:51,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:40:51,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:40:51,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:40:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-27 18:40:51,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:40:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:40:51,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:40:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-27 18:40:51,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:40:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-27 18:40:51,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617872422] [2020-10-27 18:40:51,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:40:51,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:40:51,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41864615] [2020-10-27 18:40:51,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:40:51,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:40:51,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:40:51,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:40:51,869 INFO L87 Difference]: Start difference. First operand 6252 states and 7550 transitions. Second operand 7 states. [2020-10-27 18:40:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:40:59,112 INFO L93 Difference]: Finished difference Result 17326 states and 21196 transitions. [2020-10-27 18:40:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:40:59,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 561 [2020-10-27 18:40:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:40:59,180 INFO L225 Difference]: With dead ends: 17326 [2020-10-27 18:40:59,181 INFO L226 Difference]: Without dead ends: 11080 [2020-10-27 18:40:59,205 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 18:40:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11080 states. [2020-10-27 18:40:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11080 to 10729. [2020-10-27 18:40:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10729 states. [2020-10-27 18:40:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10729 states to 10729 states and 12700 transitions. [2020-10-27 18:40:59,519 INFO L78 Accepts]: Start accepts. Automaton has 10729 states and 12700 transitions. Word has length 561 [2020-10-27 18:40:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:40:59,520 INFO L481 AbstractCegarLoop]: Abstraction has 10729 states and 12700 transitions. [2020-10-27 18:40:59,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:40:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 10729 states and 12700 transitions. [2020-10-27 18:40:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-27 18:40:59,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:40:59,539 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:59,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:40:59,539 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:40:59,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:40:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1747576404, now seen corresponding path program 1 times [2020-10-27 18:40:59,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:40:59,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139390536] [2020-10-27 18:40:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:40:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:40:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:40:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:00,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:04,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 613 [2020-10-27 18:41:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:41:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 18:41:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:41:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:41:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:04,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:04,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:04,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:04,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:41:04,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:04,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:04,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:04,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:04,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:04,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:04,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:04,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:41:04,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:05,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:05,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:05,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:41:05,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:05,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 18:41:05,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:05,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:05,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:41:05,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:05,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:41:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:05,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:05,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:41:05,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:41:05,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:41:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-10-27 18:41:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:05,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:41:05,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:41:05,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 18:41:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 353 proven. 70 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-27 18:41:06,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139390536] [2020-10-27 18:41:06,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:06,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:41:06,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925245145] [2020-10-27 18:41:06,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:41:06,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:06,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:41:06,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:41:06,287 INFO L87 Difference]: Start difference. First operand 10729 states and 12700 transitions. Second operand 7 states. [2020-10-27 18:41:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:12,622 INFO L93 Difference]: Finished difference Result 22180 states and 26333 transitions. [2020-10-27 18:41:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:41:12,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 595 [2020-10-27 18:41:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:12,667 INFO L225 Difference]: With dead ends: 22180 [2020-10-27 18:41:12,667 INFO L226 Difference]: Without dead ends: 11794 [2020-10-27 18:41:12,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:41:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11794 states. [2020-10-27 18:41:12,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11794 to 11429. [2020-10-27 18:41:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11429 states. [2020-10-27 18:41:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11429 states to 11429 states and 13475 transitions. [2020-10-27 18:41:12,980 INFO L78 Accepts]: Start accepts. Automaton has 11429 states and 13475 transitions. Word has length 595 [2020-10-27 18:41:12,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:12,982 INFO L481 AbstractCegarLoop]: Abstraction has 11429 states and 13475 transitions. [2020-10-27 18:41:12,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:41:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 11429 states and 13475 transitions. [2020-10-27 18:41:13,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2020-10-27 18:41:13,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:13,006 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:41:13,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:41:13,007 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:13,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:13,008 INFO L82 PathProgramCache]: Analyzing trace with hash 573726645, now seen corresponding path program 1 times [2020-10-27 18:41:13,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:13,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874655252] [2020-10-27 18:41:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 727 [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 490 [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:41:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:18,391 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 18:41:18,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:18,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:18,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:41:18,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:18,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:18,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:18,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:18,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:41:18,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:18,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:18,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:18,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:18,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:41:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:41:18,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:41:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:41:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:41:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:18,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:41:18,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:41:18,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:41:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:18,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-27 18:41:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:18,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 481 proven. 70 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2020-10-27 18:41:19,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874655252] [2020-10-27 18:41:19,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:19,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:41:19,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460935867] [2020-10-27 18:41:19,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:41:19,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:19,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:41:19,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:41:19,577 INFO L87 Difference]: Start difference. First operand 11429 states and 13475 transitions. Second operand 8 states. [2020-10-27 18:41:28,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:28,770 INFO L93 Difference]: Finished difference Result 27618 states and 33235 transitions. [2020-10-27 18:41:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:41:28,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 707 [2020-10-27 18:41:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:28,837 INFO L225 Difference]: With dead ends: 27618 [2020-10-27 18:41:28,837 INFO L226 Difference]: Without dead ends: 16532 [2020-10-27 18:41:28,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:41:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16532 states. [2020-10-27 18:41:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16532 to 16193. [2020-10-27 18:41:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16193 states. [2020-10-27 18:41:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16193 states to 16193 states and 19395 transitions. [2020-10-27 18:41:29,265 INFO L78 Accepts]: Start accepts. Automaton has 16193 states and 19395 transitions. Word has length 707 [2020-10-27 18:41:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:29,267 INFO L481 AbstractCegarLoop]: Abstraction has 16193 states and 19395 transitions. [2020-10-27 18:41:29,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:41:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16193 states and 19395 transitions. [2020-10-27 18:41:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-27 18:41:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:29,304 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:41:29,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:41:29,305 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:29,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1792244295, now seen corresponding path program 1 times [2020-10-27 18:41:29,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:29,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629133254] [2020-10-27 18:41:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:30,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:34,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 856 [2020-10-27 18:41:34,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:41:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:41:34,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 619 [2020-10-27 18:41:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:41:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:34,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:41:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:34,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:34,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:41:34,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:34,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 18:41:34,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:41:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:35,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:35,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 18:41:35,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 18:41:35,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-27 18:41:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-27 18:41:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:35,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:35,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:41:35,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 18:41:35,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:41:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2020-10-27 18:41:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:35,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:35,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:41:35,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:41:35,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 18:41:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 481 proven. 70 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2020-10-27 18:41:35,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629133254] [2020-10-27 18:41:35,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:35,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:41:35,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175825892] [2020-10-27 18:41:35,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:41:35,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:35,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:41:35,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:41:35,731 INFO L87 Difference]: Start difference. First operand 16193 states and 19395 transitions. Second operand 7 states. [2020-10-27 18:41:45,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:45,409 INFO L93 Difference]: Finished difference Result 35808 states and 43052 transitions. [2020-10-27 18:41:45,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:41:45,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 836 [2020-10-27 18:41:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:45,481 INFO L225 Difference]: With dead ends: 35808 [2020-10-27 18:41:45,481 INFO L226 Difference]: Without dead ends: 19958 [2020-10-27 18:41:45,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 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 18:41:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19958 states. [2020-10-27 18:41:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19958 to 18943. [2020-10-27 18:41:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18943 states. [2020-10-27 18:41:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18943 states to 18943 states and 22437 transitions. [2020-10-27 18:41:46,064 INFO L78 Accepts]: Start accepts. Automaton has 18943 states and 22437 transitions. Word has length 836 [2020-10-27 18:41:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:46,066 INFO L481 AbstractCegarLoop]: Abstraction has 18943 states and 22437 transitions. [2020-10-27 18:41:46,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:41:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 18943 states and 22437 transitions. [2020-10-27 18:41:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2020-10-27 18:41:46,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:46,114 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:41:46,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:41:46,114 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:46,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1100351018, now seen corresponding path program 1 times [2020-10-27 18:41:46,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:46,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395443652] [2020-10-27 18:41:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:51,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 924 [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:41:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:41:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:51,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:51,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:41:51,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:41:51,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:51,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:51,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:51,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:41:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:51,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:51,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:41:51,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:41:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:41:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:41:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:41:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:41:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:52,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:41:52,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:41:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-27 18:41:52,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:41:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:41:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:41:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:41:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:41:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-10-27 18:41:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:41:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:41:52,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:41:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:41:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 300 proven. 479 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-10-27 18:41:54,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395443652] [2020-10-27 18:41:54,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:41:54,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:41:54,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289085443] [2020-10-27 18:41:54,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:41:54,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:41:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:41:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:41:54,381 INFO L87 Difference]: Start difference. First operand 18943 states and 22437 transitions. Second operand 6 states. [2020-10-27 18:41:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:41:59,004 INFO L93 Difference]: Finished difference Result 37355 states and 44438 transitions. [2020-10-27 18:41:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:41:59,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 906 [2020-10-27 18:41:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:41:59,066 INFO L225 Difference]: With dead ends: 37355 [2020-10-27 18:41:59,066 INFO L226 Difference]: Without dead ends: 18971 [2020-10-27 18:41:59,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:41:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18971 states. [2020-10-27 18:41:59,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18971 to 18911. [2020-10-27 18:41:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18911 states. [2020-10-27 18:41:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18911 states to 18911 states and 21640 transitions. [2020-10-27 18:41:59,675 INFO L78 Accepts]: Start accepts. Automaton has 18911 states and 21640 transitions. Word has length 906 [2020-10-27 18:41:59,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:41:59,676 INFO L481 AbstractCegarLoop]: Abstraction has 18911 states and 21640 transitions. [2020-10-27 18:41:59,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:41:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 18911 states and 21640 transitions. [2020-10-27 18:41:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1229 [2020-10-27 18:41:59,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:41:59,739 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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] [2020-10-27 18:41:59,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:41:59,740 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:41:59,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:41:59,741 INFO L82 PathProgramCache]: Analyzing trace with hash 515462807, now seen corresponding path program 1 times [2020-10-27 18:41:59,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:41:59,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543672703] [2020-10-27 18:41:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:41:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:01,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:05,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1248 [2020-10-27 18:42:05,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:42:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 18:42:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 425 [2020-10-27 18:42:05,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:42:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:05,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:05,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:42:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-27 18:42:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-27 18:42:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:42:06,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2020-10-27 18:42:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:06,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:06,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:42:06,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:42:06,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:42:06,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 959 [2020-10-27 18:42:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2332 backedges. 683 proven. 479 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2020-10-27 18:42:07,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543672703] [2020-10-27 18:42:07,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:07,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:42:07,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977642439] [2020-10-27 18:42:07,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:42:07,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:07,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:42:07,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:42:07,460 INFO L87 Difference]: Start difference. First operand 18911 states and 21640 transitions. Second operand 7 states. [2020-10-27 18:42:09,484 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 18:42:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:12,332 INFO L93 Difference]: Finished difference Result 37723 states and 45816 transitions. [2020-10-27 18:42:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:42:12,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1228 [2020-10-27 18:42:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:12,433 INFO L225 Difference]: With dead ends: 37723 [2020-10-27 18:42:12,434 INFO L226 Difference]: Without dead ends: 19358 [2020-10-27 18:42:12,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:42:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19358 states. [2020-10-27 18:42:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19358 to 18858. [2020-10-27 18:42:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18858 states. [2020-10-27 18:42:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18858 states to 18858 states and 20856 transitions. [2020-10-27 18:42:12,964 INFO L78 Accepts]: Start accepts. Automaton has 18858 states and 20856 transitions. Word has length 1228 [2020-10-27 18:42:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:12,965 INFO L481 AbstractCegarLoop]: Abstraction has 18858 states and 20856 transitions. [2020-10-27 18:42:12,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:42:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 18858 states and 20856 transitions. [2020-10-27 18:42:12,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1238 [2020-10-27 18:42:13,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:13,000 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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] [2020-10-27 18:42:13,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:42:13,001 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:13,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:13,002 INFO L82 PathProgramCache]: Analyzing trace with hash -2040139231, now seen corresponding path program 1 times [2020-10-27 18:42:13,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:13,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770113038] [2020-10-27 18:42:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:13,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:14,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:14,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:18,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:18,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1257 [2020-10-27 18:42:18,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:42:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 18:42:18,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:42:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 434 [2020-10-27 18:42:18,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 543 [2020-10-27 18:42:18,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:18,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:18,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:18,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:42:18,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:18,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 18:42:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:18,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-27 18:42:18,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-27 18:42:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:42:19,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:19,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2020-10-27 18:42:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:19,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:19,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:42:19,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-27 18:42:19,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-27 18:42:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:20,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 968 [2020-10-27 18:42:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:20,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:20,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:42:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:20,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:42:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2384 backedges. 1106 proven. 692 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2020-10-27 18:42:21,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770113038] [2020-10-27 18:42:21,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:21,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:42:21,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744440818] [2020-10-27 18:42:21,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:42:21,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:42:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:42:21,155 INFO L87 Difference]: Start difference. First operand 18858 states and 20856 transitions. Second operand 8 states. [2020-10-27 18:42:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:25,738 INFO L93 Difference]: Finished difference Result 40139 states and 44602 transitions. [2020-10-27 18:42:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:42:25,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1237 [2020-10-27 18:42:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:25,791 INFO L225 Difference]: With dead ends: 40139 [2020-10-27 18:42:25,791 INFO L226 Difference]: Without dead ends: 17139 [2020-10-27 18:42:25,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:42:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17139 states. [2020-10-27 18:42:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17139 to 15384. [2020-10-27 18:42:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15384 states. [2020-10-27 18:42:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15384 states to 15384 states and 16324 transitions. [2020-10-27 18:42:26,115 INFO L78 Accepts]: Start accepts. Automaton has 15384 states and 16324 transitions. Word has length 1237 [2020-10-27 18:42:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:26,115 INFO L481 AbstractCegarLoop]: Abstraction has 15384 states and 16324 transitions. [2020-10-27 18:42:26,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:42:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 15384 states and 16324 transitions. [2020-10-27 18:42:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2020-10-27 18:42:26,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:26,140 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, 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, 7, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:42:26,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:42:26,141 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash -973182095, now seen corresponding path program 1 times [2020-10-27 18:42:26,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:26,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875370670] [2020-10-27 18:42:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1362 [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-27 18:42:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:31,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:31,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:31,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:31,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:42:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:31,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 18:42:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:31,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:42:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:31,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:42:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 18:42:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-27 18:42:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:42:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 18:42:32,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:42:32,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:42:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 18:42:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 900 [2020-10-27 18:42:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:32,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:32,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:42:32,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-27 18:42:32,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-27 18:42:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1184 [2020-10-27 18:42:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 983 proven. 381 refuted. 0 times theorem prover too weak. 1723 trivial. 0 not checked. [2020-10-27 18:42:34,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875370670] [2020-10-27 18:42:34,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:34,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:42:34,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938176190] [2020-10-27 18:42:34,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:42:34,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:34,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:42:34,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:42:34,245 INFO L87 Difference]: Start difference. First operand 15384 states and 16324 transitions. Second operand 8 states. [2020-10-27 18:42:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:38,330 INFO L93 Difference]: Finished difference Result 31440 states and 33414 transitions. [2020-10-27 18:42:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:42:38,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1336 [2020-10-27 18:42:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:38,367 INFO L225 Difference]: With dead ends: 31440 [2020-10-27 18:42:38,368 INFO L226 Difference]: Without dead ends: 16740 [2020-10-27 18:42:38,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 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 18:42:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16740 states. [2020-10-27 18:42:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16740 to 16395. [2020-10-27 18:42:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16395 states. [2020-10-27 18:42:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16395 states to 16395 states and 17370 transitions. [2020-10-27 18:42:38,702 INFO L78 Accepts]: Start accepts. Automaton has 16395 states and 17370 transitions. Word has length 1336 [2020-10-27 18:42:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:38,703 INFO L481 AbstractCegarLoop]: Abstraction has 16395 states and 17370 transitions. [2020-10-27 18:42:38,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:42:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16395 states and 17370 transitions. [2020-10-27 18:42:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1559 [2020-10-27 18:42:38,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:38,742 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, 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, 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, 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, 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, 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] [2020-10-27 18:42:38,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:42:38,742 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:38,743 INFO L82 PathProgramCache]: Analyzing trace with hash -577804827, now seen corresponding path program 1 times [2020-10-27 18:42:38,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:38,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748176294] [2020-10-27 18:42:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:44,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1582 [2020-10-27 18:42:44,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:42:44,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 18:42:44,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:44,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:44,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 759 [2020-10-27 18:42:44,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:42:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:44,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:42:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:44,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:44,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:44,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:42:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:44,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:42:44,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:42:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:44,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 18:42:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:44,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 18:42:44,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:42:44,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:44,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-10-27 18:42:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:44,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:44,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:42:44,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:42:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:42:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:44,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-27 18:42:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:45,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:45,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:45,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-27 18:42:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:42:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:42:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:45,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1024 [2020-10-27 18:42:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:45,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:45,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:42:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:42:45,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:42:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:45,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1289 [2020-10-27 18:42:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:45,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:45,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:45,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:45,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:42:45,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-27 18:42:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:45,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4083 backedges. 1135 proven. 479 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2020-10-27 18:42:47,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748176294] [2020-10-27 18:42:47,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:42:47,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:42:47,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582839080] [2020-10-27 18:42:47,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:42:47,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:42:47,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:42:47,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:42:47,569 INFO L87 Difference]: Start difference. First operand 16395 states and 17370 transitions. Second operand 7 states. [2020-10-27 18:42:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:42:52,074 INFO L93 Difference]: Finished difference Result 32112 states and 34060 transitions. [2020-10-27 18:42:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:42:52,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1558 [2020-10-27 18:42:52,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:42:52,107 INFO L225 Difference]: With dead ends: 32112 [2020-10-27 18:42:52,108 INFO L226 Difference]: Without dead ends: 16401 [2020-10-27 18:42:52,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:42:52,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16401 states. [2020-10-27 18:42:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16401 to 16395. [2020-10-27 18:42:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16395 states. [2020-10-27 18:42:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16395 states to 16395 states and 17349 transitions. [2020-10-27 18:42:52,375 INFO L78 Accepts]: Start accepts. Automaton has 16395 states and 17349 transitions. Word has length 1558 [2020-10-27 18:42:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:42:52,376 INFO L481 AbstractCegarLoop]: Abstraction has 16395 states and 17349 transitions. [2020-10-27 18:42:52,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:42:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 16395 states and 17349 transitions. [2020-10-27 18:42:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1588 [2020-10-27 18:42:52,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:42:52,407 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:42:52,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:42:52,407 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:42:52,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:42:52,408 INFO L82 PathProgramCache]: Analyzing trace with hash 305728294, now seen corresponding path program 1 times [2020-10-27 18:42:52,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:42:52,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026439400] [2020-10-27 18:42:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:42:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1609 [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1548 [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 18:42:57,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:42:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:57,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:57,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:57,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:42:57,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:57,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:42:57,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:57,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:57,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:42:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:42:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:58,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:58,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:42:58,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:42:58,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 18:42:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:58,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:58,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:58,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-27 18:42:58,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:42:58,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:58,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2020-10-27 18:42:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:58,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:58,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:42:58,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:58,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:42:58,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:58,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1053 [2020-10-27 18:42:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:42:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:42:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1318 [2020-10-27 18:42:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:42:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-27 18:42:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:43:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3934 backedges. 315 proven. 6 refuted. 0 times theorem prover too weak. 3613 trivial. 0 not checked. [2020-10-27 18:43:00,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026439400] [2020-10-27 18:43:00,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:43:00,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:43:00,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598499901] [2020-10-27 18:43:00,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:43:00,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:43:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:43:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:43:00,184 INFO L87 Difference]: Start difference. First operand 16395 states and 17349 transitions. Second operand 5 states.