/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:18:29,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:18:29,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:18:29,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:18:29,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:18:29,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:18:29,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:18:29,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:18:29,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:18:29,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:18:29,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:18:29,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:18:29,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:18:29,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:18:29,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:18:29,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:18:29,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:18:29,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:18:29,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:18:29,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:18:29,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:18:29,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:18:29,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:18:29,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:18:29,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:18:29,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:18:29,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:18:29,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:18:29,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:18:29,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:18:29,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:18:29,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:18:29,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:18:29,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:18:29,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:18:29,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:18:29,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:18:29,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:18:29,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:18:29,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:18:29,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:18:29,318 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 [2020-10-28 13:18:29,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:18:29,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:18:29,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:18:29,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:18:29,381 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:18:29,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:18:29,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:18:29,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:18:29,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:18:29,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:18:29,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:18:29,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:18:29,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:18:29,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:18:29,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:18:29,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:18:29,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:18:29,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:18:29,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:18:29,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:18:29,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:18:29,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:18:29,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:18:29,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:18:29,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:18:29,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:18:29,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:18:29,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:18:29,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:18:29,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:18:29,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:18:29,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:18:29,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:18:29,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:18:29,915 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:18:29,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15.c [2020-10-28 13:18:30,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b455b5fe/3abb00d42d154f46ba261078ede43a7b/FLAGdec28e1f8 [2020-10-28 13:18:30,916 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:18:30,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label15.c [2020-10-28 13:18:30,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b455b5fe/3abb00d42d154f46ba261078ede43a7b/FLAGdec28e1f8 [2020-10-28 13:18:31,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b455b5fe/3abb00d42d154f46ba261078ede43a7b [2020-10-28 13:18:31,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:18:31,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:18:31,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:18:31,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:18:31,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:18:31,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:18:31" (1/1) ... [2020-10-28 13:18:31,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77708402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:31, skipping insertion in model container [2020-10-28 13:18:31,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:18:31" (1/1) ... [2020-10-28 13:18:31,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:18:31,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:18:31,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:18:31,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:18:32,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:18:32,291 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:18:32,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32 WrapperNode [2020-10-28 13:18:32,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:18:32,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:18:32,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:18:32,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:18:32,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (1/1) ... [2020-10-28 13:18:32,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (1/1) ... [2020-10-28 13:18:32,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (1/1) ... [2020-10-28 13:18:32,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (1/1) ... [2020-10-28 13:18:32,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (1/1) ... [2020-10-28 13:18:32,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (1/1) ... [2020-10-28 13:18:32,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (1/1) ... [2020-10-28 13:18:32,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:18:32,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:18:32,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:18:32,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:18:32,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (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 [2020-10-28 13:18:32,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:18:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:18:32,623 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:18:32,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:18:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:18:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:18:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:18:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:18:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:18:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:18:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:18:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:18:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:18:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:18:32,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:18:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:18:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:18:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:18:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:18:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:18:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:18:35,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:18:35,405 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:18:35,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:18:35 BoogieIcfgContainer [2020-10-28 13:18:35,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:18:35,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:18:35,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:18:35,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:18:35,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:18:31" (1/3) ... [2020-10-28 13:18:35,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abe2ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:18:35, skipping insertion in model container [2020-10-28 13:18:35,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32" (2/3) ... [2020-10-28 13:18:35,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abe2ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:18:35, skipping insertion in model container [2020-10-28 13:18:35,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:18:35" (3/3) ... [2020-10-28 13:18:35,418 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label15.c [2020-10-28 13:18:35,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:18:35,439 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:18:35,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:18:35,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:18:35,504 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:18:35,504 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:18:35,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:18:35,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:18:35,505 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:18:35,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:18:35,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:18:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:18:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 13:18:35,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:35,543 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] [2020-10-28 13:18:35,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:35,551 INFO L82 PathProgramCache]: Analyzing trace with hash 211398092, now seen corresponding path program 1 times [2020-10-28 13:18:35,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:35,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367716545] [2020-10-28 13:18:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 13:18:36,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-28 13:18:36,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:18:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 13:18:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:18:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:36,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:36,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:18:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:36,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:18:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:18:36,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367716545] [2020-10-28 13:18:36,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:18:36,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:18:36,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227159630] [2020-10-28 13:18:36,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:18:36,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:36,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:18:36,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:18:36,573 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:18:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:41,661 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:18:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:18:41,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 13:18:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:41,698 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:18:41,698 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:18:41,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:18:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:18:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:18:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:18:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:18:41,864 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 29 [2020-10-28 13:18:41,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:41,866 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:18:41,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:18:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:18:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 13:18:41,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:41,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:41,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:18:41,877 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:41,878 INFO L82 PathProgramCache]: Analyzing trace with hash 564705261, now seen corresponding path program 1 times [2020-10-28 13:18:41,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:41,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868368191] [2020-10-28 13:18:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:43,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:18:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-10-28 13:18:43,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:43,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:18:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:18:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:43,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:43,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:43,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:43,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:43,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:18:43,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:43,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:18:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:43,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:43,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:43,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:18:43,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:43,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:18:43,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:43,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:43,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:43,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:18:43,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:18:43,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868368191] [2020-10-28 13:18:43,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:18:43,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:18:43,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261504448] [2020-10-28 13:18:43,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:43,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:43,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:43,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:43,718 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:18:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:49,483 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-28 13:18:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:18:49,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 13:18:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:49,494 INFO L225 Difference]: With dead ends: 2090 [2020-10-28 13:18:49,494 INFO L226 Difference]: Without dead ends: 1403 [2020-10-28 13:18:49,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:18:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-28 13:18:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-28 13:18:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-28 13:18:49,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-28 13:18:49,566 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 105 [2020-10-28 13:18:49,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:49,567 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-28 13:18:49,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:49,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-28 13:18:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 13:18:49,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:49,573 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:18:49,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:18:49,573 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash -859525506, now seen corresponding path program 1 times [2020-10-28 13:18:49,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:49,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481893196] [2020-10-28 13:18:49,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:49,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 13:18:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:18:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3419 [2020-10-28 13:18:53,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:53,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:18:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:18:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:53,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:53,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:53,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:18:53,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:53,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:53,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:53,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:18:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:18:53,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:53,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:18:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:18:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:53,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:53,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:18:53,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:53,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 13:18:53,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:53,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:18:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:18:53,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481893196] [2020-10-28 13:18:53,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:53,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:18:53,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972991691] [2020-10-28 13:18:53,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:53,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:53,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:53,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:53,744 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 7 states. [2020-10-28 13:18:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:59,661 INFO L93 Difference]: Finished difference Result 3514 states and 4790 transitions. [2020-10-28 13:18:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:18:59,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-28 13:18:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:59,690 INFO L225 Difference]: With dead ends: 3514 [2020-10-28 13:18:59,690 INFO L226 Difference]: Without dead ends: 2141 [2020-10-28 13:18:59,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:18:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-10-28 13:18:59,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2106. [2020-10-28 13:18:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2106 states. [2020-10-28 13:18:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2653 transitions. [2020-10-28 13:18:59,795 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2653 transitions. Word has length 192 [2020-10-28 13:18:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:59,799 INFO L481 AbstractCegarLoop]: Abstraction has 2106 states and 2653 transitions. [2020-10-28 13:18:59,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2653 transitions. [2020-10-28 13:18:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 13:18:59,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:59,808 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:18:59,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:18:59,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:59,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:59,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1272108316, now seen corresponding path program 1 times [2020-10-28 13:18:59,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:59,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768438500] [2020-10-28 13:18:59,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 13:19:02,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:19:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3030 [2020-10-28 13:19:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:02,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:19:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:03,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:19:03,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:19:03,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:19:03,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:03,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:03,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:19:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:03,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:19:03,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:19:03,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:03,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:03,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:19:03,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:03,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768438500] [2020-10-28 13:19:03,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:03,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:19:03,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28724865] [2020-10-28 13:19:03,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:19:03,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:03,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:19:03,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:19:03,362 INFO L87 Difference]: Start difference. First operand 2106 states and 2653 transitions. Second operand 8 states. [2020-10-28 13:19:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:08,998 INFO L93 Difference]: Finished difference Result 5633 states and 7318 transitions. [2020-10-28 13:19:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:19:09,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-10-28 13:19:09,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:09,024 INFO L225 Difference]: With dead ends: 5633 [2020-10-28 13:19:09,025 INFO L226 Difference]: Without dead ends: 3172 [2020-10-28 13:19:09,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:19:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2020-10-28 13:19:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3138. [2020-10-28 13:19:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-10-28 13:19:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 3428 transitions. [2020-10-28 13:19:09,146 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 3428 transitions. Word has length 203 [2020-10-28 13:19:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:09,147 INFO L481 AbstractCegarLoop]: Abstraction has 3138 states and 3428 transitions. [2020-10-28 13:19:09,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:19:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 3428 transitions. [2020-10-28 13:19:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 13:19:09,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:09,152 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:19:09,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:19:09,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:09,153 INFO L82 PathProgramCache]: Analyzing trace with hash -566494080, now seen corresponding path program 1 times [2020-10-28 13:19:09,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:09,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972182901] [2020-10-28 13:19:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:09,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:12,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:12,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 13:19:12,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:12,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3490 [2020-10-28 13:19:12,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:12,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:19:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:19:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:12,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:12,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:12,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:12,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:19:12,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:12,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:12,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:13,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:13,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:19:13,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:13,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:19:13,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:13,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:13,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:13,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:19:13,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:13,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:19:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:13,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:19:13,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:13,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:19:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:13,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972182901] [2020-10-28 13:19:13,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:13,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:19:13,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375354324] [2020-10-28 13:19:13,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:19:13,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:13,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:19:13,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:19:13,893 INFO L87 Difference]: Start difference. First operand 3138 states and 3428 transitions. Second operand 8 states. [2020-10-28 13:19:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:20,352 INFO L93 Difference]: Finished difference Result 8340 states and 9226 transitions. [2020-10-28 13:19:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:19:20,353 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 258 [2020-10-28 13:19:20,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:20,379 INFO L225 Difference]: With dead ends: 8340 [2020-10-28 13:19:20,379 INFO L226 Difference]: Without dead ends: 4859 [2020-10-28 13:19:20,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2020-10-28 13:19:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 4506. [2020-10-28 13:19:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4506 states. [2020-10-28 13:19:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 4988 transitions. [2020-10-28 13:19:20,514 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 4988 transitions. Word has length 258 [2020-10-28 13:19:20,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:20,515 INFO L481 AbstractCegarLoop]: Abstraction has 4506 states and 4988 transitions. [2020-10-28 13:19:20,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:19:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 4988 transitions. [2020-10-28 13:19:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-28 13:19:20,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:20,523 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:20,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:19:20,523 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:20,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1124225412, now seen corresponding path program 1 times [2020-10-28 13:19:20,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:20,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295400490] [2020-10-28 13:19:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:25,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:25,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-28 13:19:25,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 13:19:25,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:25,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:25,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:19:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:25,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:25,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:25,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:25,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:19:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:25,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:25,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:26,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:26,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:19:26,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-28 13:19:26,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:26,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:26,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:26,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:19:26,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-28 13:19:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:26,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:26,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:26,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:19:26,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:26,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:19:26,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:26,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:19:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:19:27,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295400490] [2020-10-28 13:19:27,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:27,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:27,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639015836] [2020-10-28 13:19:27,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:27,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:27,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:27,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:27,343 INFO L87 Difference]: Start difference. First operand 4506 states and 4988 transitions. Second operand 7 states. [2020-10-28 13:19:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:31,566 INFO L93 Difference]: Finished difference Result 9729 states and 10765 transitions. [2020-10-28 13:19:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:19:31,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-28 13:19:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:31,593 INFO L225 Difference]: With dead ends: 9729 [2020-10-28 13:19:31,593 INFO L226 Difference]: Without dead ends: 5229 [2020-10-28 13:19:31,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:19:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2020-10-28 13:19:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 5192. [2020-10-28 13:19:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5192 states. [2020-10-28 13:19:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 5696 transitions. [2020-10-28 13:19:31,760 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 5696 transitions. Word has length 347 [2020-10-28 13:19:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:31,761 INFO L481 AbstractCegarLoop]: Abstraction has 5192 states and 5696 transitions. [2020-10-28 13:19:31,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 5696 transitions. [2020-10-28 13:19:31,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-10-28 13:19:31,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:31,780 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:31,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:19:31,780 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:31,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:31,781 INFO L82 PathProgramCache]: Analyzing trace with hash -211722347, now seen corresponding path program 1 times [2020-10-28 13:19:31,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:31,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584350710] [2020-10-28 13:19:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:36,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:36,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 610 [2020-10-28 13:19:36,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:36,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 13:19:36,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:36,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:19:36,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:19:36,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:37,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:19:37,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:37,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:19:37,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 13:19:37,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:19:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:19:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:38,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:38,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:19:38,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:38,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-28 13:19:38,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:38,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:19:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:19:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:38,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:19:38,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:19:38,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:38,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:19:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 311 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 13:19:39,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584350710] [2020-10-28 13:19:39,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:39,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:39,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243845847] [2020-10-28 13:19:39,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:39,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:39,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:39,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:39,488 INFO L87 Difference]: Start difference. First operand 5192 states and 5696 transitions. Second operand 7 states. [2020-10-28 13:19:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:44,149 INFO L93 Difference]: Finished difference Result 9732 states and 10751 transitions. [2020-10-28 13:19:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:19:44,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 594 [2020-10-28 13:19:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:44,176 INFO L225 Difference]: With dead ends: 9732 [2020-10-28 13:19:44,176 INFO L226 Difference]: Without dead ends: 5222 [2020-10-28 13:19:44,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:19:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2020-10-28 13:19:44,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5192. [2020-10-28 13:19:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5192 states. [2020-10-28 13:19:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 5691 transitions. [2020-10-28 13:19:44,317 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 5691 transitions. Word has length 594 [2020-10-28 13:19:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:44,319 INFO L481 AbstractCegarLoop]: Abstraction has 5192 states and 5691 transitions. [2020-10-28 13:19:44,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 5691 transitions. [2020-10-28 13:19:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-28 13:19:44,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:44,342 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:19:44,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:19:44,342 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash 899389890, now seen corresponding path program 1 times [2020-10-28 13:19:44,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:44,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99599539] [2020-10-28 13:19:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:44,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:47,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 646 [2020-10-28 13:19:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 13:19:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:19:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:19:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:49,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:19:49,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:49,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:19:49,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 13:19:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:19:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:50,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:19:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:50,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:50,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:19:50,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:50,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 13:19:50,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:50,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:50,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:50,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:50,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:19:50,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:50,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:19:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:50,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:19:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:50,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:19:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:50,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:19:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:50,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:50,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:50,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:19:50,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:19:50,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:50,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:19:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:50,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 251 proven. 194 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-28 13:19:51,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99599539] [2020-10-28 13:19:51,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:51,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:51,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660585433] [2020-10-28 13:19:51,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:51,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:51,108 INFO L87 Difference]: Start difference. First operand 5192 states and 5691 transitions. Second operand 7 states. [2020-10-28 13:19:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:55,548 INFO L93 Difference]: Finished difference Result 12098 states and 13424 transitions. [2020-10-28 13:19:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:19:55,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 628 [2020-10-28 13:19:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:55,593 INFO L225 Difference]: With dead ends: 12098 [2020-10-28 13:19:55,593 INFO L226 Difference]: Without dead ends: 7588 [2020-10-28 13:19:55,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7588 states. [2020-10-28 13:19:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7588 to 7239. [2020-10-28 13:19:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7239 states. [2020-10-28 13:19:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7239 states to 7239 states and 7942 transitions. [2020-10-28 13:19:55,839 INFO L78 Accepts]: Start accepts. Automaton has 7239 states and 7942 transitions. Word has length 628 [2020-10-28 13:19:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:55,840 INFO L481 AbstractCegarLoop]: Abstraction has 7239 states and 7942 transitions. [2020-10-28 13:19:55,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7239 states and 7942 transitions. [2020-10-28 13:19:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-28 13:19:55,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:55,853 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:19:55,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:19:55,854 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:55,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:55,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1090515916, now seen corresponding path program 1 times [2020-10-28 13:19:55,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:55,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916080072] [2020-10-28 13:19:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:56,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:58,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:01,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:01,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-28 13:20:01,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 13:20:01,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:01,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:20:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:20:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:01,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:01,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:20:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:01,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:01,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:01,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:01,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:20:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:20:01,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:01,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:01,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:20:01,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:01,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:20:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:01,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:01,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:20:01,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:01,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:20:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:20:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:02,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 349 proven. 68 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2020-10-28 13:20:02,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916080072] [2020-10-28 13:20:02,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:02,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:02,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491690215] [2020-10-28 13:20:02,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:02,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:02,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:02,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:02,395 INFO L87 Difference]: Start difference. First operand 7239 states and 7942 transitions. Second operand 7 states. [2020-10-28 13:20:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:06,916 INFO L93 Difference]: Finished difference Result 14155 states and 15615 transitions. [2020-10-28 13:20:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:20:06,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 689 [2020-10-28 13:20:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:06,938 INFO L225 Difference]: With dead ends: 14155 [2020-10-28 13:20:06,938 INFO L226 Difference]: Without dead ends: 7598 [2020-10-28 13:20:06,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:20:06,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2020-10-28 13:20:07,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 7582. [2020-10-28 13:20:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7582 states. [2020-10-28 13:20:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7582 states to 7582 states and 8303 transitions. [2020-10-28 13:20:07,110 INFO L78 Accepts]: Start accepts. Automaton has 7582 states and 8303 transitions. Word has length 689 [2020-10-28 13:20:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:07,112 INFO L481 AbstractCegarLoop]: Abstraction has 7582 states and 8303 transitions. [2020-10-28 13:20:07,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7582 states and 8303 transitions. [2020-10-28 13:20:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2020-10-28 13:20:07,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:07,123 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:20:07,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:20:07,123 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:07,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:07,124 INFO L82 PathProgramCache]: Analyzing trace with hash 183203192, now seen corresponding path program 1 times [2020-10-28 13:20:07,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:07,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338327960] [2020-10-28 13:20:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:10,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:12,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:12,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 709 [2020-10-28 13:20:12,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:20:12,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:12,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-28 13:20:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:20:12,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:12,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:12,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:12,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:12,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:12,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:12,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:12,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:12,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:12,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:20:12,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:12,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:12,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:12,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:12,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:12,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:12,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:20:12,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:12,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 13:20:12,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:12,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:12,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:20:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:20:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:20:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:13,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:20:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:13,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:13,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:20:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:13,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:20:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 349 proven. 68 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-28 13:20:13,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338327960] [2020-10-28 13:20:13,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:13,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:20:13,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389842716] [2020-10-28 13:20:13,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:20:13,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:13,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:20:13,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:20:13,736 INFO L87 Difference]: Start difference. First operand 7582 states and 8303 transitions. Second operand 8 states. [2020-10-28 13:20:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:18,597 INFO L93 Difference]: Finished difference Result 17891 states and 19933 transitions. [2020-10-28 13:20:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:20:18,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 691 [2020-10-28 13:20:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:18,629 INFO L225 Difference]: With dead ends: 17891 [2020-10-28 13:20:18,630 INFO L226 Difference]: Without dead ends: 10991 [2020-10-28 13:20:18,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:20:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10991 states. [2020-10-28 13:20:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10991 to 9972. [2020-10-28 13:20:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9972 states. [2020-10-28 13:20:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9972 states to 9972 states and 11130 transitions. [2020-10-28 13:20:18,848 INFO L78 Accepts]: Start accepts. Automaton has 9972 states and 11130 transitions. Word has length 691 [2020-10-28 13:20:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:18,849 INFO L481 AbstractCegarLoop]: Abstraction has 9972 states and 11130 transitions. [2020-10-28 13:20:18,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:20:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9972 states and 11130 transitions. [2020-10-28 13:20:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-10-28 13:20:18,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:18,861 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:20:18,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:20:18,861 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:18,863 INFO L82 PathProgramCache]: Analyzing trace with hash -31080300, now seen corresponding path program 1 times [2020-10-28 13:20:18,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:18,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807744100] [2020-10-28 13:20:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:19,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:23,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 713 [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:20:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:24,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:24,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:20:24,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:24,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:24,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:24,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:20:24,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:24,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:20:24,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:24,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:20:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:24,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:20:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:24,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:20:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-28 13:20:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:25,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:20:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 438 proven. 69 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-28 13:20:25,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807744100] [2020-10-28 13:20:25,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:25,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:25,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800234527] [2020-10-28 13:20:25,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:25,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:25,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:25,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:25,472 INFO L87 Difference]: Start difference. First operand 9972 states and 11130 transitions. Second operand 7 states. [2020-10-28 13:20:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:29,846 INFO L93 Difference]: Finished difference Result 21972 states and 24832 transitions. [2020-10-28 13:20:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:20:29,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 695 [2020-10-28 13:20:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:29,891 INFO L225 Difference]: With dead ends: 21972 [2020-10-28 13:20:29,891 INFO L226 Difference]: Without dead ends: 12682 [2020-10-28 13:20:29,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:20:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12682 states. [2020-10-28 13:20:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12682 to 12682. [2020-10-28 13:20:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12682 states. [2020-10-28 13:20:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12682 states to 12682 states and 14214 transitions. [2020-10-28 13:20:30,192 INFO L78 Accepts]: Start accepts. Automaton has 12682 states and 14214 transitions. Word has length 695 [2020-10-28 13:20:30,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:30,193 INFO L481 AbstractCegarLoop]: Abstraction has 12682 states and 14214 transitions. [2020-10-28 13:20:30,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 12682 states and 14214 transitions. [2020-10-28 13:20:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2020-10-28 13:20:30,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:30,207 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:20:30,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:20:30,208 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:30,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1900781754, now seen corresponding path program 1 times [2020-10-28 13:20:30,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:30,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857814110] [2020-10-28 13:20:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:31,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:32,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:32,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 744 [2020-10-28 13:20:32,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2577 [2020-10-28 13:20:32,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:32,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:20:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:20:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:20:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:33,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:33,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:20:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:33,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:33,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:20:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:20:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:20:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:33,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:33,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:20:33,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:20:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:20:33,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:33,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:20:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 98 proven. 4 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2020-10-28 13:20:33,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857814110] [2020-10-28 13:20:33,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:33,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:20:33,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262148077] [2020-10-28 13:20:33,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:20:33,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:33,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:20:33,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:20:33,895 INFO L87 Difference]: Start difference. First operand 12682 states and 14214 transitions. Second operand 6 states. [2020-10-28 13:20:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:39,372 INFO L93 Difference]: Finished difference Result 26708 states and 29975 transitions. [2020-10-28 13:20:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:20:39,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 726 [2020-10-28 13:20:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:39,421 INFO L225 Difference]: With dead ends: 26708 [2020-10-28 13:20:39,421 INFO L226 Difference]: Without dead ends: 14708 [2020-10-28 13:20:39,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:20:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14708 states. [2020-10-28 13:20:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14708 to 14371. [2020-10-28 13:20:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14371 states. [2020-10-28 13:20:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 15842 transitions. [2020-10-28 13:20:39,808 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 15842 transitions. Word has length 726 [2020-10-28 13:20:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:39,809 INFO L481 AbstractCegarLoop]: Abstraction has 14371 states and 15842 transitions. [2020-10-28 13:20:39,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:20:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 15842 transitions. [2020-10-28 13:20:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2020-10-28 13:20:39,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:39,834 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:20:39,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:20:39,835 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:39,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash -471637668, now seen corresponding path program 1 times [2020-10-28 13:20:39,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:39,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284070818] [2020-10-28 13:20:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1051 [2020-10-28 13:20:45,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 13:20:45,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 830 [2020-10-28 13:20:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 13:20:45,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:45,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:45,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:45,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:45,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:45,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:20:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:45,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:20:45,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:45,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:20:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-28 13:20:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:20:45,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 820 [2020-10-28 13:20:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:45,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:45,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:20:45,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-28 13:20:45,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:45,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:45,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-28 13:20:45,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:46,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 855 proven. 2 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2020-10-28 13:20:46,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284070818] [2020-10-28 13:20:46,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:46,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:46,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261811838] [2020-10-28 13:20:46,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:46,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:46,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:46,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:46,667 INFO L87 Difference]: Start difference. First operand 14371 states and 15842 transitions. Second operand 7 states. [2020-10-28 13:20:51,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:51,750 INFO L93 Difference]: Finished difference Result 31799 states and 35124 transitions. [2020-10-28 13:20:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:20:51,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1029 [2020-10-28 13:20:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:51,802 INFO L225 Difference]: With dead ends: 31799 [2020-10-28 13:20:51,802 INFO L226 Difference]: Without dead ends: 18110 [2020-10-28 13:20:51,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18110 states. [2020-10-28 13:20:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18110 to 17092. [2020-10-28 13:20:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17092 states. [2020-10-28 13:20:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 18717 transitions. [2020-10-28 13:20:52,151 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 18717 transitions. Word has length 1029 [2020-10-28 13:20:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:52,152 INFO L481 AbstractCegarLoop]: Abstraction has 17092 states and 18717 transitions. [2020-10-28 13:20:52,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 18717 transitions. [2020-10-28 13:20:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-28 13:20:52,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:52,177 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-28 13:20:52,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:20:52,177 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:52,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:52,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1531327256, now seen corresponding path program 1 times [2020-10-28 13:20:52,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:52,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771111123] [2020-10-28 13:20:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:54,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:57,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1113 [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 830 [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:20:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:57,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:57,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:57,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:57,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:57,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:57,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:57,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:57,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:57,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:20:57,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:57,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:57,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:57,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:57,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:20:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:20:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:57,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:57,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:20:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:57,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:20:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:58,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:58,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:58,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-28 13:20:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:58,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:58,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:20:58,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:58,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:20:58,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:58,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:20:58,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:58,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 820 [2020-10-28 13:20:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:20:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2114 backedges. 943 proven. 2 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2020-10-28 13:21:00,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771111123] [2020-10-28 13:21:00,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:00,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:00,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660466900] [2020-10-28 13:21:00,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:00,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:00,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:00,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:00,018 INFO L87 Difference]: Start difference. First operand 17092 states and 18717 transitions. Second operand 7 states. [2020-10-28 13:21:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:05,345 INFO L93 Difference]: Finished difference Result 34182 states and 37471 transitions. [2020-10-28 13:21:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:21:05,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1091 [2020-10-28 13:21:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:05,398 INFO L225 Difference]: With dead ends: 34182 [2020-10-28 13:21:05,399 INFO L226 Difference]: Without dead ends: 17772 [2020-10-28 13:21:05,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17772 states. [2020-10-28 13:21:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17772 to 17772. [2020-10-28 13:21:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17772 states. [2020-10-28 13:21:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17772 states to 17772 states and 19436 transitions. [2020-10-28 13:21:05,809 INFO L78 Accepts]: Start accepts. Automaton has 17772 states and 19436 transitions. Word has length 1091 [2020-10-28 13:21:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:05,810 INFO L481 AbstractCegarLoop]: Abstraction has 17772 states and 19436 transitions. [2020-10-28 13:21:05,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 17772 states and 19436 transitions. [2020-10-28 13:21:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-28 13:21:05,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:05,845 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:21:05,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:21:05,846 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:05,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:05,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1874260814, now seen corresponding path program 1 times [2020-10-28 13:21:05,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:05,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109769993] [2020-10-28 13:21:05,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1144 [2020-10-28 13:21:11,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 13:21:11,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:21:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 923 [2020-10-28 13:21:11,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-28 13:21:11,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:11,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:21:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:21:11,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:21:11,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:11,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:11,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:21:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:11,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:11,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-28 13:21:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:21:11,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:21:11,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:11,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:21:11,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 913 [2020-10-28 13:21:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:21:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2372 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 2210 trivial. 0 not checked. [2020-10-28 13:21:12,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109769993] [2020-10-28 13:21:12,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:12,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:21:12,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816111114] [2020-10-28 13:21:12,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:21:12,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:12,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:21:12,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:21:12,870 INFO L87 Difference]: Start difference. First operand 17772 states and 19436 transitions. Second operand 5 states. [2020-10-28 13:21:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:16,635 INFO L93 Difference]: Finished difference Result 34862 states and 38179 transitions. [2020-10-28 13:21:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:21:16,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1122 [2020-10-28 13:21:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:16,675 INFO L225 Difference]: With dead ends: 34862 [2020-10-28 13:21:16,676 INFO L226 Difference]: Without dead ends: 17772 [2020-10-28 13:21:16,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:21:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17772 states. [2020-10-28 13:21:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17772 to 17772. [2020-10-28 13:21:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17772 states. [2020-10-28 13:21:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17772 states to 17772 states and 19055 transitions. [2020-10-28 13:21:16,982 INFO L78 Accepts]: Start accepts. Automaton has 17772 states and 19055 transitions. Word has length 1122 [2020-10-28 13:21:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:16,983 INFO L481 AbstractCegarLoop]: Abstraction has 17772 states and 19055 transitions. [2020-10-28 13:21:16,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:21:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 17772 states and 19055 transitions. [2020-10-28 13:21:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1313 [2020-10-28 13:21:17,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:17,016 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:21:17,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:21:17,016 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:17,017 INFO L82 PathProgramCache]: Analyzing trace with hash -910258761, now seen corresponding path program 1 times [2020-10-28 13:21:17,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:17,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131411638] [2020-10-28 13:21:17,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1336 [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 830 [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:22,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:21:22,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:21:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:21:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:21:22,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:21:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2020-10-28 13:21:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:22,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:21:22,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:21:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 820 [2020-10-28 13:21:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:23,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:23,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:23,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:23,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 13:21:23,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:23,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:23,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:23,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1093 [2020-10-28 13:21:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:23,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:23,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:21:23,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:21:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:23,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:21:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3077 backedges. 984 proven. 197 refuted. 0 times theorem prover too weak. 1896 trivial. 0 not checked. [2020-10-28 13:21:25,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131411638] [2020-10-28 13:21:25,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:25,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:25,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875698172] [2020-10-28 13:21:25,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:25,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:25,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:25,419 INFO L87 Difference]: Start difference. First operand 17772 states and 19055 transitions. Second operand 7 states. [2020-10-28 13:21:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:31,607 INFO L93 Difference]: Finished difference Result 35540 states and 38111 transitions. [2020-10-28 13:21:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:21:31,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1312 [2020-10-28 13:21:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:31,653 INFO L225 Difference]: With dead ends: 35540 [2020-10-28 13:21:31,653 INFO L226 Difference]: Without dead ends: 18450 [2020-10-28 13:21:31,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:21:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18450 states. [2020-10-28 13:21:31,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18450 to 17772. [2020-10-28 13:21:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17772 states. [2020-10-28 13:21:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17772 states to 17772 states and 19017 transitions. [2020-10-28 13:21:32,000 INFO L78 Accepts]: Start accepts. Automaton has 17772 states and 19017 transitions. Word has length 1312 [2020-10-28 13:21:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:32,002 INFO L481 AbstractCegarLoop]: Abstraction has 17772 states and 19017 transitions. [2020-10-28 13:21:32,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 17772 states and 19017 transitions. [2020-10-28 13:21:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2020-10-28 13:21:32,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:32,041 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 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] [2020-10-28 13:21:32,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:21:32,041 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:32,042 INFO L82 PathProgramCache]: Analyzing trace with hash -463278462, now seen corresponding path program 1 times [2020-10-28 13:21:32,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:32,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788011910] [2020-10-28 13:21:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:32,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1344 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 838 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:37,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:21:37,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:37,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:38,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:21:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:21:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:38,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:38,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:38,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:21:38,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:38,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:21:38,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:38,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:21:38,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 830 [2020-10-28 13:21:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:38,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1103 [2020-10-28 13:21:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:38,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:21:38,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:21:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:38,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:21:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3004 backedges. 967 proven. 197 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2020-10-28 13:21:40,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788011910] [2020-10-28 13:21:40,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:40,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:40,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261474899] [2020-10-28 13:21:40,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:40,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:40,272 INFO L87 Difference]: Start difference. First operand 17772 states and 19017 transitions. Second operand 7 states. [2020-10-28 13:21:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:45,115 INFO L93 Difference]: Finished difference Result 34868 states and 37349 transitions. [2020-10-28 13:21:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:21:45,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1322 [2020-10-28 13:21:45,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:45,154 INFO L225 Difference]: With dead ends: 34868 [2020-10-28 13:21:45,155 INFO L226 Difference]: Without dead ends: 17778 [2020-10-28 13:21:45,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17778 states. [2020-10-28 13:21:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17778 to 17772. [2020-10-28 13:21:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17772 states. [2020-10-28 13:21:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17772 states to 17772 states and 19005 transitions. [2020-10-28 13:21:45,504 INFO L78 Accepts]: Start accepts. Automaton has 17772 states and 19005 transitions. Word has length 1322 [2020-10-28 13:21:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:45,506 INFO L481 AbstractCegarLoop]: Abstraction has 17772 states and 19005 transitions. [2020-10-28 13:21:45,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 17772 states and 19005 transitions. [2020-10-28 13:21:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2020-10-28 13:21:45,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:45,541 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:21:45,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:21:45,542 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:45,542 INFO L82 PathProgramCache]: Analyzing trace with hash 527552501, now seen corresponding path program 1 times [2020-10-28 13:21:45,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:45,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762606301] [2020-10-28 13:21:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:46,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1364 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 858 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:51,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:51,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:21:51,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:51,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:51,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:21:51,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:21:51,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:21:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:21:51,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:21:51,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:21:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:21:51,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:21:51,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:51,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2020-10-28 13:21:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:21:51,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:21:51,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:51,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:21:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2020-10-28 13:21:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:52,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-28 13:21:52,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:52,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1121 [2020-10-28 13:21:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:52,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3216 backedges. 1012 proven. 197 refuted. 0 times theorem prover too weak. 2007 trivial. 0 not checked. [2020-10-28 13:21:54,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762606301] [2020-10-28 13:21:54,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:54,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:54,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732851217] [2020-10-28 13:21:54,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:54,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:54,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:54,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:54,598 INFO L87 Difference]: Start difference. First operand 17772 states and 19005 transitions. Second operand 7 states.