/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:55:20,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:55:20,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:55:20,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:55:20,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:55:20,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:55:20,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:55:20,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:55:20,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:55:20,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:55:20,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:55:20,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:55:20,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:55:20,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:55:20,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:55:20,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:55:20,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:55:20,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:55:20,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:55:20,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:55:20,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:55:20,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:55:20,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:55:20,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:55:20,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:55:20,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:55:20,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:55:20,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:55:20,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:55:20,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:55:20,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:55:20,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:55:20,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:55:20,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:55:20,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:55:20,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:55:20,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:55:20,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:55:20,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:55:20,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:55:20,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:55:20,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:55:20,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:55:20,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:55:20,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:55:20,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:55:20,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:55:20,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:55:20,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:55:20,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:55:20,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:55:20,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:55:20,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:55:20,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:55:20,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:55:20,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:55:20,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:55:20,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:55:20,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:55:20,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:55:20,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:55:20,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:55:20,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:55:20,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:55:20,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:55:20,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:55:20,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:55:20,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:55:20,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:55:20,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:55:20,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:55:20,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:55:20,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:55:20,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:55:20,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:55:20,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:55:20,919 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:55:20,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2020-10-26 23:55:21,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f18eec5d/0ee11cc20ad54336a5961cd586f92ef4/FLAG3304838f3 [2020-10-26 23:55:22,082 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:55:22,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2020-10-26 23:55:22,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f18eec5d/0ee11cc20ad54336a5961cd586f92ef4/FLAG3304838f3 [2020-10-26 23:55:22,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f18eec5d/0ee11cc20ad54336a5961cd586f92ef4 [2020-10-26 23:55:22,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:55:22,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:55:22,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:55:22,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:55:22,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:55:22,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:55:22" (1/1) ... [2020-10-26 23:55:22,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3caeaeb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:22, skipping insertion in model container [2020-10-26 23:55:22,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:55:22" (1/1) ... [2020-10-26 23:55:22,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:55:22,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:55:23,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:55:23,476 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:55:23,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:55:23,807 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:55:23,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23 WrapperNode [2020-10-26 23:55:23,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:55:23,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:55:23,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:55:23,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:55:23,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... [2020-10-26 23:55:23,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... [2020-10-26 23:55:23,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... [2020-10-26 23:55:23,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... [2020-10-26 23:55:23,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... [2020-10-26 23:55:23,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... [2020-10-26 23:55:24,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... [2020-10-26 23:55:24,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:55:24,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:55:24,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:55:24,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:55:24,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:55:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:55:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:55:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:55:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:55:24,143 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:55:24,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:55:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:55:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:55:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:55:24,144 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:55:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:55:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:55:24,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:55:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:55:24,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:55:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:55:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:55:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:55:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:55:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:55:24,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:55:26,625 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:55:26,625 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:55:26,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:55:26 BoogieIcfgContainer [2020-10-26 23:55:26,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:55:26,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:55:26,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:55:26,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:55:26,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:55:22" (1/3) ... [2020-10-26 23:55:26,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6955d50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:55:26, skipping insertion in model container [2020-10-26 23:55:26,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:55:23" (2/3) ... [2020-10-26 23:55:26,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6955d50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:55:26, skipping insertion in model container [2020-10-26 23:55:26,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:55:26" (3/3) ... [2020-10-26 23:55:26,638 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label21.c [2020-10-26 23:55:26,651 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:55:26,657 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:55:26,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:55:26,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:55:26,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:55:26,701 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:55:26,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:55:26,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:55:26,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:55:26,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:55:26,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:55:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:55:26,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-26 23:55:26,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:26,741 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] [2020-10-26 23:55:26,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:26,749 INFO L82 PathProgramCache]: Analyzing trace with hash -805708276, now seen corresponding path program 1 times [2020-10-26 23:55:26,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:26,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769353266] [2020-10-26 23:55:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-26 23:55:27,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-26 23:55:27,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:27,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 23:55:27,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:55:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:27,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:55:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:27,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769353266] [2020-10-26 23:55:27,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:55:27,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:55:27,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729297069] [2020-10-26 23:55:27,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:55:27,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:27,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:55:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:55:27,858 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:55:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:32,826 INFO L93 Difference]: Finished difference Result 1189 states and 2183 transitions. [2020-10-26 23:55:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:55:32,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-26 23:55:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:32,851 INFO L225 Difference]: With dead ends: 1189 [2020-10-26 23:55:32,852 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:55:32,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:55:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:55:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 688. [2020-10-26 23:55:32,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-26 23:55:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1086 transitions. [2020-10-26 23:55:32,982 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1086 transitions. Word has length 45 [2020-10-26 23:55:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:32,983 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1086 transitions. [2020-10-26 23:55:32,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:55:32,983 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1086 transitions. [2020-10-26 23:55:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-26 23:55:32,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:32,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:32,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:55:32,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:32,991 INFO L82 PathProgramCache]: Analyzing trace with hash 784150393, now seen corresponding path program 1 times [2020-10-26 23:55:32,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:32,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651111797] [2020-10-26 23:55:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 23:55:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:55:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-10-26 23:55:34,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:34,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:55:34,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:55:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:34,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:34,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:34,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:55:34,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:34,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:55:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:34,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:34,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:55:34,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:55:34,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:55:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:34,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651111797] [2020-10-26 23:55:34,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:55:34,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:55:34,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503433262] [2020-10-26 23:55:34,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:34,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:34,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:34,752 INFO L87 Difference]: Start difference. First operand 688 states and 1086 transitions. Second operand 7 states. [2020-10-26 23:55:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:40,191 INFO L93 Difference]: Finished difference Result 1736 states and 2821 transitions. [2020-10-26 23:55:40,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:55:40,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-26 23:55:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:40,202 INFO L225 Difference]: With dead ends: 1736 [2020-10-26 23:55:40,202 INFO L226 Difference]: Without dead ends: 1054 [2020-10-26 23:55:40,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:55:40,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-26 23:55:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1030. [2020-10-26 23:55:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-10-26 23:55:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1386 transitions. [2020-10-26 23:55:40,286 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1386 transitions. Word has length 114 [2020-10-26 23:55:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:40,288 INFO L481 AbstractCegarLoop]: Abstraction has 1030 states and 1386 transitions. [2020-10-26 23:55:40,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1386 transitions. [2020-10-26 23:55:40,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-26 23:55:40,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:40,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:40,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:55:40,307 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1497407397, now seen corresponding path program 1 times [2020-10-26 23:55:40,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:40,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952359303] [2020-10-26 23:55:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:40,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:55:40,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:40,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-26 23:55:40,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:55:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 23:55:40,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:40,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:40,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:40,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:55:40,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:55:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:40,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:55:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:40,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:41,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:41,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:41,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:55:41,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:41,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:55:41,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:41,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952359303] [2020-10-26 23:55:41,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:55:41,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:55:41,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914212320] [2020-10-26 23:55:41,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:55:41,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:41,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:55:41,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:55:41,119 INFO L87 Difference]: Start difference. First operand 1030 states and 1386 transitions. Second operand 5 states. [2020-10-26 23:55:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:45,656 INFO L93 Difference]: Finished difference Result 2075 states and 3039 transitions. [2020-10-26 23:55:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:55:45,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-26 23:55:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:45,665 INFO L225 Difference]: With dead ends: 2075 [2020-10-26 23:55:45,666 INFO L226 Difference]: Without dead ends: 1388 [2020-10-26 23:55:45,669 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 [2020-10-26 23:55:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2020-10-26 23:55:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1374. [2020-10-26 23:55:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-26 23:55:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1805 transitions. [2020-10-26 23:55:45,720 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1805 transitions. Word has length 136 [2020-10-26 23:55:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:45,721 INFO L481 AbstractCegarLoop]: Abstraction has 1374 states and 1805 transitions. [2020-10-26 23:55:45,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:55:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1805 transitions. [2020-10-26 23:55:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-26 23:55:45,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:45,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:55:45,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:55:45,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:45,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:45,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1779179505, now seen corresponding path program 1 times [2020-10-26 23:55:45,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:45,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907227369] [2020-10-26 23:55:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:45,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:47,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-26 23:55:47,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-10-26 23:55:47,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:55:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:47,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 23:55:47,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:47,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:47,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:47,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:47,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:55:47,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:47,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:47,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:47,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:47,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:55:47,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:55:47,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:55:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:55:48,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907227369] [2020-10-26 23:55:48,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:55:48,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:55:48,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281598264] [2020-10-26 23:55:48,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:55:48,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:48,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:55:48,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:55:48,204 INFO L87 Difference]: Start difference. First operand 1374 states and 1805 transitions. Second operand 7 states. [2020-10-26 23:55:48,352 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:55:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:55:53,299 INFO L93 Difference]: Finished difference Result 2777 states and 3654 transitions. [2020-10-26 23:55:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:55:53,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-26 23:55:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:55:53,318 INFO L225 Difference]: With dead ends: 2777 [2020-10-26 23:55:53,318 INFO L226 Difference]: Without dead ends: 1746 [2020-10-26 23:55:53,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:55:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-26 23:55:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1725. [2020-10-26 23:55:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-10-26 23:55:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2170 transitions. [2020-10-26 23:55:53,402 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2170 transitions. Word has length 174 [2020-10-26 23:55:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:55:53,403 INFO L481 AbstractCegarLoop]: Abstraction has 1725 states and 2170 transitions. [2020-10-26 23:55:53,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:55:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2170 transitions. [2020-10-26 23:55:53,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-26 23:55:53,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:55:53,407 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:55:53,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:55:53,408 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:55:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:55:53,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2093911502, now seen corresponding path program 1 times [2020-10-26 23:55:53,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:55:53,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023143385] [2020-10-26 23:55:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:55:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:53,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:55:56,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:55:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-26 23:55:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:55:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:55:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-26 23:55:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:56,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:55:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:56,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:55:56,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:55:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:55:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:55:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:55:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:55:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:55:56,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:55:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:55:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:55:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:55:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:55:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:55:56,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:55:56,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-26 23:55:56,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:55:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 23:55:56,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:55:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:55:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:55:56,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:55:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:55:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:55:57,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023143385] [2020-10-26 23:55:57,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:55:57,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 23:55:57,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822083728] [2020-10-26 23:55:57,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:55:57,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:55:57,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:55:57,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:55:57,095 INFO L87 Difference]: Start difference. First operand 1725 states and 2170 transitions. Second operand 9 states. [2020-10-26 23:56:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:02,586 INFO L93 Difference]: Finished difference Result 3501 states and 4735 transitions. [2020-10-26 23:56:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:56:02,592 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2020-10-26 23:56:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:02,603 INFO L225 Difference]: With dead ends: 3501 [2020-10-26 23:56:02,603 INFO L226 Difference]: Without dead ends: 2087 [2020-10-26 23:56:02,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:56:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-10-26 23:56:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2068. [2020-10-26 23:56:02,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-10-26 23:56:02,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2265 transitions. [2020-10-26 23:56:02,682 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2265 transitions. Word has length 234 [2020-10-26 23:56:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:02,682 INFO L481 AbstractCegarLoop]: Abstraction has 2068 states and 2265 transitions. [2020-10-26 23:56:02,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:56:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2265 transitions. [2020-10-26 23:56:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-26 23:56:02,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:02,691 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:56:02,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:56:02,692 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:02,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:02,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1237472592, now seen corresponding path program 1 times [2020-10-26 23:56:02,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:02,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417985851] [2020-10-26 23:56:02,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:02,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-26 23:56:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2795 [2020-10-26 23:56:05,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:56:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:05,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:05,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:05,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:56:05,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:05,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:05,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:05,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:06,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:06,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:56:06,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-26 23:56:06,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:56:06,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:56:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:06,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:06,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 23:56:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:06,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:56:06,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417985851] [2020-10-26 23:56:06,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:06,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:06,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790656418] [2020-10-26 23:56:06,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:06,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:06,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:06,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:06,990 INFO L87 Difference]: Start difference. First operand 2068 states and 2265 transitions. Second operand 7 states. [2020-10-26 23:56:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:11,552 INFO L93 Difference]: Finished difference Result 4840 states and 5428 transitions. [2020-10-26 23:56:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:56:11,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-26 23:56:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:11,572 INFO L225 Difference]: With dead ends: 4840 [2020-10-26 23:56:11,572 INFO L226 Difference]: Without dead ends: 3115 [2020-10-26 23:56:11,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:56:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2020-10-26 23:56:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 2759. [2020-10-26 23:56:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-26 23:56:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 2977 transitions. [2020-10-26 23:56:11,663 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 2977 transitions. Word has length 413 [2020-10-26 23:56:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:11,665 INFO L481 AbstractCegarLoop]: Abstraction has 2759 states and 2977 transitions. [2020-10-26 23:56:11,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 2977 transitions. [2020-10-26 23:56:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-26 23:56:11,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:11,674 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:56:11,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:56:11,674 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:11,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1307494592, now seen corresponding path program 1 times [2020-10-26 23:56:11,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:11,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615651787] [2020-10-26 23:56:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:16,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-26 23:56:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:16,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4983 [2020-10-26 23:56:16,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:56:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 384 [2020-10-26 23:56:16,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:16,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:16,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:16,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:56:16,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:16,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:17,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:17,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:17,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:17,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:17,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-26 23:56:17,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:17,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:56:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:18,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:18,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:18,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:56:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 23:56:18,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615651787] [2020-10-26 23:56:18,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:18,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:56:18,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806826267] [2020-10-26 23:56:18,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:18,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:18,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:18,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:18,413 INFO L87 Difference]: Start difference. First operand 2759 states and 2977 transitions. Second operand 7 states. [2020-10-26 23:56:22,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:22,490 INFO L93 Difference]: Finished difference Result 6597 states and 7294 transitions. [2020-10-26 23:56:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:22,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-26 23:56:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:22,510 INFO L225 Difference]: With dead ends: 6597 [2020-10-26 23:56:22,510 INFO L226 Difference]: Without dead ends: 4183 [2020-10-26 23:56:22,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2020-10-26 23:56:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4161. [2020-10-26 23:56:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4161 states. [2020-10-26 23:56:22,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 4492 transitions. [2020-10-26 23:56:22,655 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 4492 transitions. Word has length 421 [2020-10-26 23:56:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:22,656 INFO L481 AbstractCegarLoop]: Abstraction has 4161 states and 4492 transitions. [2020-10-26 23:56:22,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 4492 transitions. [2020-10-26 23:56:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-26 23:56:22,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:22,671 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:22,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:56:22,672 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:22,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash -401250673, now seen corresponding path program 1 times [2020-10-26 23:56:22,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:22,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226820110] [2020-10-26 23:56:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-26 23:56:24,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1627 [2020-10-26 23:56:24,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:24,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:56:24,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:56:24,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:24,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:56:24,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:56:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:24,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:24,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:56:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:56:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:24,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:25,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:25,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:56:25,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 23:56:25,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:25,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:56:25,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-26 23:56:25,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226820110] [2020-10-26 23:56:25,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:25,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:25,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417019776] [2020-10-26 23:56:25,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:25,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:25,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:25,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:25,760 INFO L87 Difference]: Start difference. First operand 4161 states and 4492 transitions. Second operand 7 states. [2020-10-26 23:56:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:30,160 INFO L93 Difference]: Finished difference Result 10727 states and 11777 transitions. [2020-10-26 23:56:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:30,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-26 23:56:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:30,192 INFO L225 Difference]: With dead ends: 10727 [2020-10-26 23:56:30,193 INFO L226 Difference]: Without dead ends: 6911 [2020-10-26 23:56:30,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6911 states. [2020-10-26 23:56:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6911 to 6221. [2020-10-26 23:56:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-10-26 23:56:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 6782 transitions. [2020-10-26 23:56:30,373 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 6782 transitions. Word has length 521 [2020-10-26 23:56:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:30,374 INFO L481 AbstractCegarLoop]: Abstraction has 6221 states and 6782 transitions. [2020-10-26 23:56:30,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 6782 transitions. [2020-10-26 23:56:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-26 23:56:30,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:30,390 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:56:30,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:56:30,391 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:30,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1849468720, now seen corresponding path program 1 times [2020-10-26 23:56:30,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:30,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431251021] [2020-10-26 23:56:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-26 23:56:35,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:56:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4941 [2020-10-26 23:56:35,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:56:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:56:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:56:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:35,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:35,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:35,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:56:35,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:56:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:35,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:36,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:36,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:36,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:36,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-26 23:56:36,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:36,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:56:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:36,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:36,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:36,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:56:36,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-26 23:56:36,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:56:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 75 proven. 242 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:56:37,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431251021] [2020-10-26 23:56:37,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:37,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:37,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085409718] [2020-10-26 23:56:37,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:56:37,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:37,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:56:37,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:56:37,397 INFO L87 Difference]: Start difference. First operand 6221 states and 6782 transitions. Second operand 8 states. [2020-10-26 23:56:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:41,346 INFO L93 Difference]: Finished difference Result 12117 states and 13243 transitions. [2020-10-26 23:56:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:56:41,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 541 [2020-10-26 23:56:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:41,374 INFO L225 Difference]: With dead ends: 12117 [2020-10-26 23:56:41,374 INFO L226 Difference]: Without dead ends: 6241 [2020-10-26 23:56:41,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:56:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2020-10-26 23:56:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6221. [2020-10-26 23:56:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-10-26 23:56:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 6780 transitions. [2020-10-26 23:56:41,555 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 6780 transitions. Word has length 541 [2020-10-26 23:56:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:41,556 INFO L481 AbstractCegarLoop]: Abstraction has 6221 states and 6780 transitions. [2020-10-26 23:56:41,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:56:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 6780 transitions. [2020-10-26 23:56:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-10-26 23:56:41,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:41,566 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:41,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:56:41,566 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:41,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:41,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1784714295, now seen corresponding path program 1 times [2020-10-26 23:56:41,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:41,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699111833] [2020-10-26 23:56:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:41,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:43,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:43,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-26 23:56:43,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2279 [2020-10-26 23:56:43,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:56:43,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:56:43,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:44,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:44,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:44,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:56:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:44,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:56:44,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:44,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:44,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:56:44,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:44,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:56:44,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:44,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:56:44,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:44,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:56:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:44,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:44,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:56:44,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 23:56:44,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:44,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-26 23:56:44,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-26 23:56:45,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699111833] [2020-10-26 23:56:45,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:45,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:45,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440063066] [2020-10-26 23:56:45,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:45,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:45,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:45,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:45,035 INFO L87 Difference]: Start difference. First operand 6221 states and 6780 transitions. Second operand 7 states. [2020-10-26 23:56:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:48,724 INFO L93 Difference]: Finished difference Result 13478 states and 14892 transitions. [2020-10-26 23:56:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:56:48,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 612 [2020-10-26 23:56:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:48,755 INFO L225 Difference]: With dead ends: 13478 [2020-10-26 23:56:48,756 INFO L226 Difference]: Without dead ends: 7602 [2020-10-26 23:56:48,771 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 [2020-10-26 23:56:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7602 states. [2020-10-26 23:56:48,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7602 to 7586. [2020-10-26 23:56:48,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7586 states. [2020-10-26 23:56:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7586 states to 7586 states and 8366 transitions. [2020-10-26 23:56:48,958 INFO L78 Accepts]: Start accepts. Automaton has 7586 states and 8366 transitions. Word has length 612 [2020-10-26 23:56:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:48,960 INFO L481 AbstractCegarLoop]: Abstraction has 7586 states and 8366 transitions. [2020-10-26 23:56:48,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7586 states and 8366 transitions. [2020-10-26 23:56:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2020-10-26 23:56:48,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:48,971 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:56:48,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:56:48,972 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1107076479, now seen corresponding path program 1 times [2020-10-26 23:56:48,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:48,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176274410] [2020-10-26 23:56:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:51,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:51,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-26 23:56:51,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:56:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2538 [2020-10-26 23:56:51,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:56:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-26 23:56:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:51,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:51,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:51,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:51,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:56:51,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:51,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:51,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:51,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:51,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:56:51,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:51,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:52,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:52,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:56:52,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:56:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:56:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:52,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:56:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:52,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:52,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:56:52,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-26 23:56:52,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:56:52,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:56:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-26 23:56:52,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176274410] [2020-10-26 23:56:52,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:52,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:56:52,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411149257] [2020-10-26 23:56:52,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:56:52,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:52,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:56:52,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:56:52,952 INFO L87 Difference]: Start difference. First operand 7586 states and 8366 transitions. Second operand 7 states. [2020-10-26 23:56:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:56:57,155 INFO L93 Difference]: Finished difference Result 17568 states and 19544 transitions. [2020-10-26 23:56:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:56:57,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 641 [2020-10-26 23:56:57,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:56:57,196 INFO L225 Difference]: With dead ends: 17568 [2020-10-26 23:56:57,196 INFO L226 Difference]: Without dead ends: 10327 [2020-10-26 23:56:57,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:56:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10327 states. [2020-10-26 23:56:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10327 to 9986. [2020-10-26 23:56:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9986 states. [2020-10-26 23:56:57,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 11003 transitions. [2020-10-26 23:56:57,466 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 11003 transitions. Word has length 641 [2020-10-26 23:56:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:56:57,467 INFO L481 AbstractCegarLoop]: Abstraction has 9986 states and 11003 transitions. [2020-10-26 23:56:57,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:56:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 11003 transitions. [2020-10-26 23:56:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2020-10-26 23:56:57,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:56:57,482 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:56:57,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:56:57,483 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:56:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:56:57,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1362952135, now seen corresponding path program 1 times [2020-10-26 23:56:57,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:56:57,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118700893] [2020-10-26 23:56:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:56:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:58,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-26 23:56:58,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-26 23:56:58,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:56:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-26 23:56:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-26 23:56:58,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:56:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:58,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:56:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:58,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:56:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:56:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:56:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:56:59,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:56:59,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:56:59,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 23:56:59,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:56:59,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:56:59,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:56:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:56:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:56:59,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-26 23:56:59,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:56:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-26 23:56:59,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118700893] [2020-10-26 23:56:59,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:56:59,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:56:59,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912919788] [2020-10-26 23:56:59,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:56:59,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:56:59,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:56:59,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:56:59,623 INFO L87 Difference]: Start difference. First operand 9986 states and 11003 transitions. Second operand 6 states. [2020-10-26 23:57:04,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:04,586 INFO L93 Difference]: Finished difference Result 23340 states and 25979 transitions. [2020-10-26 23:57:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:57:04,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 668 [2020-10-26 23:57:04,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:04,639 INFO L225 Difference]: With dead ends: 23340 [2020-10-26 23:57:04,640 INFO L226 Difference]: Without dead ends: 13699 [2020-10-26 23:57:04,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:57:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13699 states. [2020-10-26 23:57:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13699 to 13699. [2020-10-26 23:57:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13699 states. [2020-10-26 23:57:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13699 states to 13699 states and 15184 transitions. [2020-10-26 23:57:04,933 INFO L78 Accepts]: Start accepts. Automaton has 13699 states and 15184 transitions. Word has length 668 [2020-10-26 23:57:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:04,934 INFO L481 AbstractCegarLoop]: Abstraction has 13699 states and 15184 transitions. [2020-10-26 23:57:04,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:57:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 13699 states and 15184 transitions. [2020-10-26 23:57:04,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2020-10-26 23:57:04,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:04,966 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, 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, 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, 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] [2020-10-26 23:57:04,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:57:04,966 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -266317877, now seen corresponding path program 1 times [2020-10-26 23:57:04,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:04,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858558411] [2020-10-26 23:57:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:10,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:10,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:10,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1230 [2020-10-26 23:57:10,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-26 23:57:10,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:57:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:57:10,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:10,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:10,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:10,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:10,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:10,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:10,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:57:10,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:10,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:10,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:10,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:10,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:10,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:57:10,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:57:10,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:57:10,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:57:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:11,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-26 23:57:11,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:57:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:57:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:11,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:57:11,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:57:11,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-26 23:57:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:57:11,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:11,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-26 23:57:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:11,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:11,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:57:11,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:11,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:57:11,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:57:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:11,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1057 [2020-10-26 23:57:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:12,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:57:12,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-26 23:57:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:57:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2771 backedges. 548 proven. 416 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2020-10-26 23:57:13,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858558411] [2020-10-26 23:57:13,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:13,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:13,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732603087] [2020-10-26 23:57:13,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:13,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:13,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:13,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:13,196 INFO L87 Difference]: Start difference. First operand 13699 states and 15184 transitions. Second operand 7 states. [2020-10-26 23:57:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:18,059 INFO L93 Difference]: Finished difference Result 29100 states and 32393 transitions. [2020-10-26 23:57:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:57:18,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1206 [2020-10-26 23:57:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:18,106 INFO L225 Difference]: With dead ends: 29100 [2020-10-26 23:57:18,107 INFO L226 Difference]: Without dead ends: 15746 [2020-10-26 23:57:18,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:57:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15746 states. [2020-10-26 23:57:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15746 to 15744. [2020-10-26 23:57:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15744 states. [2020-10-26 23:57:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15744 states to 15744 states and 17364 transitions. [2020-10-26 23:57:18,451 INFO L78 Accepts]: Start accepts. Automaton has 15744 states and 17364 transitions. Word has length 1206 [2020-10-26 23:57:18,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:18,452 INFO L481 AbstractCegarLoop]: Abstraction has 15744 states and 17364 transitions. [2020-10-26 23:57:18,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:18,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15744 states and 17364 transitions. [2020-10-26 23:57:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1209 [2020-10-26 23:57:18,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:18,485 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, 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, 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, 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] [2020-10-26 23:57:18,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:57:18,485 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:18,486 INFO L82 PathProgramCache]: Analyzing trace with hash -71233273, now seen corresponding path program 1 times [2020-10-26 23:57:18,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:18,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725365] [2020-10-26 23:57:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:23,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:23,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1232 [2020-10-26 23:57:23,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 23:57:23,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:57:23,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:57:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:23,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:23,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:23,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:23,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:23,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:23,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:57:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:24,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:57:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:57:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:57:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:57:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:24,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:57:24,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:57:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:24,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-26 23:57:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:57:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-10-26 23:57:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:24,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1059 [2020-10-26 23:57:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:24,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:24,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:57:24,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:57:24,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:57:25,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:25,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 548 proven. 416 refuted. 0 times theorem prover too weak. 1811 trivial. 0 not checked. [2020-10-26 23:57:26,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725365] [2020-10-26 23:57:26,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:26,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:26,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156238688] [2020-10-26 23:57:26,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:26,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:26,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:26,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:26,028 INFO L87 Difference]: Start difference. First operand 15744 states and 17364 transitions. Second operand 7 states. [2020-10-26 23:57:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:30,893 INFO L93 Difference]: Finished difference Result 33175 states and 36906 transitions. [2020-10-26 23:57:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:57:30,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1208 [2020-10-26 23:57:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:30,940 INFO L225 Difference]: With dead ends: 33175 [2020-10-26 23:57:30,940 INFO L226 Difference]: Without dead ends: 17776 [2020-10-26 23:57:30,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:57:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17776 states. [2020-10-26 23:57:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17776 to 17774. [2020-10-26 23:57:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17774 states. [2020-10-26 23:57:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17774 states to 17774 states and 19421 transitions. [2020-10-26 23:57:31,299 INFO L78 Accepts]: Start accepts. Automaton has 17774 states and 19421 transitions. Word has length 1208 [2020-10-26 23:57:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:31,300 INFO L481 AbstractCegarLoop]: Abstraction has 17774 states and 19421 transitions. [2020-10-26 23:57:31,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17774 states and 19421 transitions. [2020-10-26 23:57:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2020-10-26 23:57:31,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:31,342 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:31,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:57:31,342 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1085289803, now seen corresponding path program 1 times [2020-10-26 23:57:31,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:31,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767707161] [2020-10-26 23:57:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1266 [2020-10-26 23:57:36,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:57:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:57:36,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-26 23:57:36,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:57:36,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:36,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:57:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:36,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:57:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:36,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:57:36,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:57:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:57:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:37,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:37,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-26 23:57:37,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:57:37,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 23:57:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-26 23:57:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:37,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:37,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:57:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:57:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:37,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-26 23:57:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:37,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:37,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:37,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:57:37,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:57:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:37,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 820 [2020-10-26 23:57:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:37,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:37,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:37,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:57:37,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:57:37,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:57:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:37,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1093 [2020-10-26 23:57:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2877 backedges. 506 proven. 203 refuted. 0 times theorem prover too weak. 2168 trivial. 0 not checked. [2020-10-26 23:57:38,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767707161] [2020-10-26 23:57:38,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:38,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:38,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369054283] [2020-10-26 23:57:38,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:38,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:38,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:38,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:38,522 INFO L87 Difference]: Start difference. First operand 17774 states and 19421 transitions. Second operand 7 states. [2020-10-26 23:57:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:42,935 INFO L93 Difference]: Finished difference Result 36897 states and 40468 transitions. [2020-10-26 23:57:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:42,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1242 [2020-10-26 23:57:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:42,979 INFO L225 Difference]: With dead ends: 36897 [2020-10-26 23:57:42,979 INFO L226 Difference]: Without dead ends: 19468 [2020-10-26 23:57:43,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:57:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19468 states. [2020-10-26 23:57:43,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19468 to 19464. [2020-10-26 23:57:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19464 states. [2020-10-26 23:57:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19464 states to 19464 states and 21296 transitions. [2020-10-26 23:57:43,322 INFO L78 Accepts]: Start accepts. Automaton has 19464 states and 21296 transitions. Word has length 1242 [2020-10-26 23:57:43,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:43,323 INFO L481 AbstractCegarLoop]: Abstraction has 19464 states and 21296 transitions. [2020-10-26 23:57:43,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 19464 states and 21296 transitions. [2020-10-26 23:57:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1254 [2020-10-26 23:57:43,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:43,361 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:43,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:57:43,361 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:43,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:43,362 INFO L82 PathProgramCache]: Analyzing trace with hash 381513660, now seen corresponding path program 1 times [2020-10-26 23:57:43,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:43,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841293351] [2020-10-26 23:57:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:43,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:43,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:48,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:48,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1279 [2020-10-26 23:57:48,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:57:48,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-26 23:57:48,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:48,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:57:48,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:57:48,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:57:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:57:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:57:48,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:57:48,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:57:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:57:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:57:49,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:57:49,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:49,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:57:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:57:49,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:57:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:49,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:57:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:57:49,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:57:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:57:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:57:49,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:57:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:57:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 23:57:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-26 23:57:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:57:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1104 [2020-10-26 23:57:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:49,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:57:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:57:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 856 proven. 223 refuted. 0 times theorem prover too weak. 2285 trivial. 0 not checked. [2020-10-26 23:57:50,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841293351] [2020-10-26 23:57:50,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:57:50,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:57:50,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675837221] [2020-10-26 23:57:50,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:57:50,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:57:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:57:50,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:57:50,581 INFO L87 Difference]: Start difference. First operand 19464 states and 21296 transitions. Second operand 7 states. [2020-10-26 23:57:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:57:55,895 INFO L93 Difference]: Finished difference Result 42664 states and 46940 transitions. [2020-10-26 23:57:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:57:55,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1253 [2020-10-26 23:57:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:57:55,943 INFO L225 Difference]: With dead ends: 42664 [2020-10-26 23:57:55,943 INFO L226 Difference]: Without dead ends: 23545 [2020-10-26 23:57:55,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:57:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23545 states. [2020-10-26 23:57:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23545 to 23535. [2020-10-26 23:57:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23535 states. [2020-10-26 23:57:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23535 states to 23535 states and 25687 transitions. [2020-10-26 23:57:56,333 INFO L78 Accepts]: Start accepts. Automaton has 23535 states and 25687 transitions. Word has length 1253 [2020-10-26 23:57:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:57:56,334 INFO L481 AbstractCegarLoop]: Abstraction has 23535 states and 25687 transitions. [2020-10-26 23:57:56,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:57:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 23535 states and 25687 transitions. [2020-10-26 23:57:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1264 [2020-10-26 23:57:56,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:57:56,375 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:57:56,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:57:56,375 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:57:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:57:56,376 INFO L82 PathProgramCache]: Analyzing trace with hash -778370425, now seen corresponding path program 1 times [2020-10-26 23:57:56,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:57:56,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138800277] [2020-10-26 23:57:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:57:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:57:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:57:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:01,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:01,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1287 [2020-10-26 23:58:01,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:58:01,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:58:01,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:58:01,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-26 23:58:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:02,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:02,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:02,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:58:02,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:02,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:02,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:02,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:02,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:58:02,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:02,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:02,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:02,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:58:02,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:02,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:02,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:58:02,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:58:02,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:02,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:58:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:58:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:02,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:02,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:58:02,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:58:02,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:58:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:02,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:58:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:03,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:03,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:58:03,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:03,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-26 23:58:03,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-26 23:58:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-26 23:58:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:04,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:04,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:58:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:58:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:58:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3058 backedges. 1117 proven. 111 refuted. 0 times theorem prover too weak. 1830 trivial. 0 not checked. [2020-10-26 23:58:05,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138800277] [2020-10-26 23:58:05,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:05,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:05,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46636578] [2020-10-26 23:58:05,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:05,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:05,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:05,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:05,372 INFO L87 Difference]: Start difference. First operand 23535 states and 25687 transitions. Second operand 7 states. [2020-10-26 23:58:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:09,947 INFO L93 Difference]: Finished difference Result 46729 states and 51035 transitions. [2020-10-26 23:58:09,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:58:09,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1263 [2020-10-26 23:58:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:09,999 INFO L225 Difference]: With dead ends: 46729 [2020-10-26 23:58:10,000 INFO L226 Difference]: Without dead ends: 23539 [2020-10-26 23:58:10,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23539 states. [2020-10-26 23:58:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23539 to 23535. [2020-10-26 23:58:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23535 states. [2020-10-26 23:58:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23535 states to 23535 states and 25675 transitions. [2020-10-26 23:58:10,468 INFO L78 Accepts]: Start accepts. Automaton has 23535 states and 25675 transitions. Word has length 1263 [2020-10-26 23:58:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:10,469 INFO L481 AbstractCegarLoop]: Abstraction has 23535 states and 25675 transitions. [2020-10-26 23:58:10,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 23535 states and 25675 transitions. [2020-10-26 23:58:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2020-10-26 23:58:10,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:10,512 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:10,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:58:10,512 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:10,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1576040243, now seen corresponding path program 1 times [2020-10-26 23:58:10,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:10,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835293370] [2020-10-26 23:58:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:15,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1320 [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-26 23:58:15,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:16,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:16,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:16,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:16,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:16,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:58:16,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:16,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:16,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:16,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:58:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:16,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:16,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:16,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:58:16,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:58:16,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:58:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:16,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-26 23:58:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:16,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:58:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-10-26 23:58:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:58:17,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:58:17,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:58:17,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:17,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-10-26 23:58:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:58:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:58:17,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:58:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:17,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 874 [2020-10-26 23:58:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:17,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:17,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:58:17,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 23:58:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:58:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:18,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1147 [2020-10-26 23:58:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:18,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:18,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:58:18,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:58:18,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:58:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3023 backedges. 694 proven. 564 refuted. 0 times theorem prover too weak. 1765 trivial. 0 not checked. [2020-10-26 23:58:19,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835293370] [2020-10-26 23:58:19,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:19,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:19,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196350060] [2020-10-26 23:58:19,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:19,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:19,505 INFO L87 Difference]: Start difference. First operand 23535 states and 25675 transitions. Second operand 7 states. [2020-10-26 23:58:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:25,946 INFO L93 Difference]: Finished difference Result 47054 states and 51342 transitions. [2020-10-26 23:58:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:58:25,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1296 [2020-10-26 23:58:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:25,999 INFO L225 Difference]: With dead ends: 47054 [2020-10-26 23:58:25,999 INFO L226 Difference]: Without dead ends: 23864 [2020-10-26 23:58:26,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:58:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23864 states. [2020-10-26 23:58:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23864 to 23527. [2020-10-26 23:58:26,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23527 states. [2020-10-26 23:58:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23527 states to 23527 states and 25239 transitions. [2020-10-26 23:58:26,395 INFO L78 Accepts]: Start accepts. Automaton has 23527 states and 25239 transitions. Word has length 1296 [2020-10-26 23:58:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:26,396 INFO L481 AbstractCegarLoop]: Abstraction has 23527 states and 25239 transitions. [2020-10-26 23:58:26,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:26,397 INFO L276 IsEmpty]: Start isEmpty. Operand 23527 states and 25239 transitions. [2020-10-26 23:58:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1352 [2020-10-26 23:58:26,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:26,427 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:26,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:58:26,428 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:26,428 INFO L82 PathProgramCache]: Analyzing trace with hash -390776241, now seen corresponding path program 1 times [2020-10-26 23:58:26,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:26,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958493530] [2020-10-26 23:58:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:26,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1379 [2020-10-26 23:58:31,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:58:31,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:58:31,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:31,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:58:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 23:58:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:58:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:31,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:31,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:58:31,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:58:31,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:58:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:58:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:58:32,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:58:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:58:32,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:58:32,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:58:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:58:32,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:58:32,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:32,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:58:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:58:32,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:58:32,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:58:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:58:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:58:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:58:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:58:32,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:58:32,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:58:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:58:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:58:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 23:58:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-26 23:58:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:58:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:58:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:58:32,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:58:32,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 929 [2020-10-26 23:58:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:32,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:32,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:32,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:58:32,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 23:58:32,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-26 23:58:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1202 [2020-10-26 23:58:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:33,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:58:33,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:58:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:58:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:58:33,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:58:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:58:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:58:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:58:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:58:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4054 backedges. 743 proven. 200 refuted. 0 times theorem prover too weak. 3111 trivial. 0 not checked. [2020-10-26 23:58:34,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958493530] [2020-10-26 23:58:34,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:58:34,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:58:34,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695159447] [2020-10-26 23:58:34,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:58:34,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:58:34,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:58:34,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:58:34,248 INFO L87 Difference]: Start difference. First operand 23527 states and 25239 transitions. Second operand 7 states. [2020-10-26 23:58:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:58:39,052 INFO L93 Difference]: Finished difference Result 47052 states and 50493 transitions. [2020-10-26 23:58:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:58:39,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1351 [2020-10-26 23:58:39,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:58:39,092 INFO L225 Difference]: With dead ends: 47052 [2020-10-26 23:58:39,092 INFO L226 Difference]: Without dead ends: 23870 [2020-10-26 23:58:39,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:58:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23870 states. [2020-10-26 23:58:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23870 to 23525. [2020-10-26 23:58:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23525 states. [2020-10-26 23:58:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23525 states to 23525 states and 25193 transitions. [2020-10-26 23:58:39,429 INFO L78 Accepts]: Start accepts. Automaton has 23525 states and 25193 transitions. Word has length 1351 [2020-10-26 23:58:39,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:58:39,430 INFO L481 AbstractCegarLoop]: Abstraction has 23525 states and 25193 transitions. [2020-10-26 23:58:39,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:58:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 23525 states and 25193 transitions. [2020-10-26 23:58:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1351 [2020-10-26 23:58:39,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:58:39,452 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:58:39,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:58:39,453 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:58:39,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:58:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash -944927639, now seen corresponding path program 1 times [2020-10-26 23:58:39,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:58:39,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562535094] [2020-10-26 23:58:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:58:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:58:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:58:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking...