/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:43:30,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:43:30,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:43:30,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:43:30,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:43:30,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:43:30,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:43:30,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:43:30,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:43:30,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:43:30,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:43:30,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:43:30,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:43:30,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:43:30,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:43:30,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:43:30,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:43:30,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:43:30,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:43:30,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:43:30,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:43:30,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:43:30,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:43:30,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:43:30,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:43:30,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:43:30,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:43:30,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:43:30,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:43:30,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:43:30,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:43:30,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:43:30,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:43:30,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:43:30,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:43:30,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:43:30,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:43:30,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:43:30,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:43:30,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:43:30,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:43:30,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:43:30,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:43:30,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:43:30,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:43:30,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:43:30,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:43:30,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:43:30,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:43:30,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:43:30,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:43:30,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:43:30,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:43:30,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:43:30,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:43:30,575 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:43:30,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:43:30,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:43:30,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:43:30,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:43:30,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:43:30,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:43:30,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:43:30,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:43:30,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:43:30,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:43:30,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:43:30,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:43:30,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:43:30,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:43:30,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:43:30,580 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:43:31,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:43:31,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:43:31,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:43:31,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:43:31,165 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:43:31,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46.c [2020-10-26 22:43:31,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaea993b7/0faf9748032a43da89a83d08bd1b6435/FLAGf14ad28a4 [2020-10-26 22:43:32,210 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:43:32,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label46.c [2020-10-26 22:43:32,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaea993b7/0faf9748032a43da89a83d08bd1b6435/FLAGf14ad28a4 [2020-10-26 22:43:32,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aaea993b7/0faf9748032a43da89a83d08bd1b6435 [2020-10-26 22:43:32,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:43:32,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:43:32,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:43:32,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:43:32,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:43:32,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:43:32" (1/1) ... [2020-10-26 22:43:32,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2468e284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:32, skipping insertion in model container [2020-10-26 22:43:32,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:43:32" (1/1) ... [2020-10-26 22:43:32,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:43:32,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:43:33,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:43:33,189 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:43:33,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:43:33,361 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:43:33,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33 WrapperNode [2020-10-26 22:43:33,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:43:33,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:43:33,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:43:33,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:43:33,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... [2020-10-26 22:43:33,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... [2020-10-26 22:43:33,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... [2020-10-26 22:43:33,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... [2020-10-26 22:43:33,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... [2020-10-26 22:43:33,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... [2020-10-26 22:43:33,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... [2020-10-26 22:43:33,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:43:33,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:43:33,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:43:33,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:43:33,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:43:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:43:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:43:33,631 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:43:33,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:43:33,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:43:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:43:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:43:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:43:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:43:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:43:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:43:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:43:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:43:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:43:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:43:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:43:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:43:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:43:33,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:43:36,158 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:43:36,159 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:43:36,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:43:36 BoogieIcfgContainer [2020-10-26 22:43:36,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:43:36,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:43:36,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:43:36,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:43:36,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:43:32" (1/3) ... [2020-10-26 22:43:36,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3322b392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:43:36, skipping insertion in model container [2020-10-26 22:43:36,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:33" (2/3) ... [2020-10-26 22:43:36,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3322b392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:43:36, skipping insertion in model container [2020-10-26 22:43:36,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:43:36" (3/3) ... [2020-10-26 22:43:36,172 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label46.c [2020-10-26 22:43:36,185 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:43:36,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:43:36,205 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:43:36,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:43:36,237 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:43:36,237 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:43:36,237 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:43:36,238 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:43:36,238 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:43:36,238 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:43:36,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:43:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:43:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-26 22:43:36,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:36,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:43:36,276 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:36,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:36,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2000815338, now seen corresponding path program 1 times [2020-10-26 22:43:36,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:36,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084303304] [2020-10-26 22:43:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:37,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 22:43:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-26 22:43:37,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:43:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:43:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:43:37,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:43:37,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:37,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:37,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:37,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:37,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 22:43:37,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:43:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:43:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:43:37,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084303304] [2020-10-26 22:43:37,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:43:37,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 22:43:37,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757561251] [2020-10-26 22:43:37,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:43:37,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:43:37,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:43:37,728 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-26 22:43:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:42,375 INFO L93 Difference]: Finished difference Result 1004 states and 1801 transitions. [2020-10-26 22:43:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:43:42,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-26 22:43:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:42,411 INFO L225 Difference]: With dead ends: 1004 [2020-10-26 22:43:42,412 INFO L226 Difference]: Without dead ends: 640 [2020-10-26 22:43:42,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:43:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-26 22:43:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 622. [2020-10-26 22:43:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-26 22:43:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 957 transitions. [2020-10-26 22:43:42,527 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 957 transitions. Word has length 69 [2020-10-26 22:43:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:42,528 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 957 transitions. [2020-10-26 22:43:42,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:43:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 957 transitions. [2020-10-26 22:43:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 22:43:42,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:42,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:43:42,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:43:42,537 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:42,538 INFO L82 PathProgramCache]: Analyzing trace with hash -283989537, now seen corresponding path program 1 times [2020-10-26 22:43:42,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:42,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642287468] [2020-10-26 22:43:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:45,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:45,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 22:43:45,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:43:45,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2734 [2020-10-26 22:43:45,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:43:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:43:45,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 22:43:45,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:43:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:45,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:45,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:43:45,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:43:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:43:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:45,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:45,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:43:45,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-26 22:43:45,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:43:45,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:43:46,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642287468] [2020-10-26 22:43:46,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:43:46,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:43:46,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132109156] [2020-10-26 22:43:46,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:43:46,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:46,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:43:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:43:46,098 INFO L87 Difference]: Start difference. First operand 622 states and 957 transitions. Second operand 7 states. [2020-10-26 22:43:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:49,799 INFO L93 Difference]: Finished difference Result 1639 states and 2531 transitions. [2020-10-26 22:43:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:43:49,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-26 22:43:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:49,809 INFO L225 Difference]: With dead ends: 1639 [2020-10-26 22:43:49,810 INFO L226 Difference]: Without dead ends: 1023 [2020-10-26 22:43:49,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:43:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-26 22:43:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1007. [2020-10-26 22:43:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-10-26 22:43:49,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1369 transitions. [2020-10-26 22:43:49,909 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1369 transitions. Word has length 143 [2020-10-26 22:43:49,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:49,916 INFO L481 AbstractCegarLoop]: Abstraction has 1007 states and 1369 transitions. [2020-10-26 22:43:49,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:43:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1369 transitions. [2020-10-26 22:43:49,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-26 22:43:49,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:49,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:43:49,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:43:49,934 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 516586570, now seen corresponding path program 1 times [2020-10-26 22:43:49,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:49,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898905064] [2020-10-26 22:43:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:50,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:53,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:53,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-26 22:43:53,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:43:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2939 [2020-10-26 22:43:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:43:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:43:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:53,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:53,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:53,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:53,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:43:53,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:53,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:53,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:53,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:53,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:43:53,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 22:43:53,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:53,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:43:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:43:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:53,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:43:53,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 22:43:53,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:53,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:43:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:43:53,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898905064] [2020-10-26 22:43:53,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:43:53,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:43:53,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511901124] [2020-10-26 22:43:53,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:43:53,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:43:53,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:43:53,891 INFO L87 Difference]: Start difference. First operand 1007 states and 1369 transitions. Second operand 7 states. [2020-10-26 22:43:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:57,628 INFO L93 Difference]: Finished difference Result 1841 states and 2687 transitions. [2020-10-26 22:43:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:43:57,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-26 22:43:57,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:57,638 INFO L225 Difference]: With dead ends: 1841 [2020-10-26 22:43:57,638 INFO L226 Difference]: Without dead ends: 1218 [2020-10-26 22:43:57,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:43:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-10-26 22:43:57,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1207. [2020-10-26 22:43:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-10-26 22:43:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1618 transitions. [2020-10-26 22:43:57,689 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1618 transitions. Word has length 259 [2020-10-26 22:43:57,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:57,690 INFO L481 AbstractCegarLoop]: Abstraction has 1207 states and 1618 transitions. [2020-10-26 22:43:57,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:43:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1618 transitions. [2020-10-26 22:43:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-26 22:43:57,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:57,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:43:57,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:43:57,697 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:57,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1686594654, now seen corresponding path program 1 times [2020-10-26 22:43:57,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:57,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390240524] [2020-10-26 22:43:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:59,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-26 22:43:59,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:43:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1648 [2020-10-26 22:43:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:43:59,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 22:43:59,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:59,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:59,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:59,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:59,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:43:59,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:59,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:59,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:59,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:59,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:59,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:43:59,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:43:59,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:59,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:43:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:59,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:43:59,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 22:43:59,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:43:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:44:00,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390240524] [2020-10-26 22:44:00,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:00,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:44:00,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465874634] [2020-10-26 22:44:00,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:44:00,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:00,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:44:00,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:44:00,009 INFO L87 Difference]: Start difference. First operand 1207 states and 1618 transitions. Second operand 5 states. [2020-10-26 22:44:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:02,214 INFO L93 Difference]: Finished difference Result 2047 states and 2858 transitions. [2020-10-26 22:44:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:44:02,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-26 22:44:02,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:02,225 INFO L225 Difference]: With dead ends: 2047 [2020-10-26 22:44:02,225 INFO L226 Difference]: Without dead ends: 1209 [2020-10-26 22:44:02,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:44:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-26 22:44:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1207. [2020-10-26 22:44:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-10-26 22:44:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1615 transitions. [2020-10-26 22:44:02,276 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1615 transitions. Word has length 269 [2020-10-26 22:44:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:02,277 INFO L481 AbstractCegarLoop]: Abstraction has 1207 states and 1615 transitions. [2020-10-26 22:44:02,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:44:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1615 transitions. [2020-10-26 22:44:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-26 22:44:02,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:02,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:44:02,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:44:02,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:02,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:02,287 INFO L82 PathProgramCache]: Analyzing trace with hash -716432098, now seen corresponding path program 1 times [2020-10-26 22:44:02,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:02,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683079850] [2020-10-26 22:44:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:05,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:05,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-26 22:44:05,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:05,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3339 [2020-10-26 22:44:05,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:44:05,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:44:05,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:05,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:05,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:05,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:44:05,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:05,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:05,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:06,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:06,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:44:06,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:06,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 22:44:06,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:06,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:44:06,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:06,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:44:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:44:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 22:44:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:44:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:44:06,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683079850] [2020-10-26 22:44:06,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:06,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:06,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995645233] [2020-10-26 22:44:06,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:06,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:06,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:06,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:06,604 INFO L87 Difference]: Start difference. First operand 1207 states and 1615 transitions. Second operand 7 states. [2020-10-26 22:44:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:10,167 INFO L93 Difference]: Finished difference Result 2833 states and 4104 transitions. [2020-10-26 22:44:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:10,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-26 22:44:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:10,180 INFO L225 Difference]: With dead ends: 2833 [2020-10-26 22:44:10,180 INFO L226 Difference]: Without dead ends: 2010 [2020-10-26 22:44:10,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2020-10-26 22:44:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1792. [2020-10-26 22:44:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2020-10-26 22:44:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2312 transitions. [2020-10-26 22:44:10,249 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2312 transitions. Word has length 269 [2020-10-26 22:44:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:10,250 INFO L481 AbstractCegarLoop]: Abstraction has 1792 states and 2312 transitions. [2020-10-26 22:44:10,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2312 transitions. [2020-10-26 22:44:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-26 22:44:10,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:10,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:44:10,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:44:10,258 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1210790805, now seen corresponding path program 1 times [2020-10-26 22:44:10,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:10,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081300453] [2020-10-26 22:44:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:12,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-26 22:44:12,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2220 [2020-10-26 22:44:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:44:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:44:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:12,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:12,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:12,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:12,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:12,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:44:12,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:12,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:12,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:12,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:12,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:12,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:12,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 22:44:12,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:44:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:44:12,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:44:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:13,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:13,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:44:13,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:44:13,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:13,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:13,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:44:13,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:44:13,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081300453] [2020-10-26 22:44:13,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:13,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:13,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162750203] [2020-10-26 22:44:13,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:13,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:13,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:13,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:13,395 INFO L87 Difference]: Start difference. First operand 1792 states and 2312 transitions. Second operand 7 states. [2020-10-26 22:44:17,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:17,230 INFO L93 Difference]: Finished difference Result 3682 states and 5165 transitions. [2020-10-26 22:44:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:17,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-26 22:44:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:17,256 INFO L225 Difference]: With dead ends: 3682 [2020-10-26 22:44:17,256 INFO L226 Difference]: Without dead ends: 2274 [2020-10-26 22:44:17,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:44:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-10-26 22:44:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2202. [2020-10-26 22:44:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2202 states. [2020-10-26 22:44:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2808 transitions. [2020-10-26 22:44:17,358 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2808 transitions. Word has length 274 [2020-10-26 22:44:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:17,359 INFO L481 AbstractCegarLoop]: Abstraction has 2202 states and 2808 transitions. [2020-10-26 22:44:17,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2808 transitions. [2020-10-26 22:44:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-26 22:44:17,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:17,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:44:17,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:44:17,369 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash 203775168, now seen corresponding path program 1 times [2020-10-26 22:44:17,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:17,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989627249] [2020-10-26 22:44:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:19,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:19,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-26 22:44:19,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:19,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-26 22:44:19,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:19,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:19,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:44:19,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:44:19,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:19,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:19,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:19,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:19,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:44:19,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:19,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:19,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:19,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:19,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:19,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:20,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:44:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 22:44:20,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:44:20,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:44:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:20,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:20,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:44:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 22:44:20,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:44:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:44:20,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989627249] [2020-10-26 22:44:20,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:20,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:20,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986857069] [2020-10-26 22:44:20,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:20,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:20,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:20,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:20,574 INFO L87 Difference]: Start difference. First operand 2202 states and 2808 transitions. Second operand 7 states. [2020-10-26 22:44:24,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:24,363 INFO L93 Difference]: Finished difference Result 4455 states and 5826 transitions. [2020-10-26 22:44:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:24,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-26 22:44:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:24,378 INFO L225 Difference]: With dead ends: 4455 [2020-10-26 22:44:24,379 INFO L226 Difference]: Without dead ends: 2637 [2020-10-26 22:44:24,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:24,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2020-10-26 22:44:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2602. [2020-10-26 22:44:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2602 states. [2020-10-26 22:44:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3280 transitions. [2020-10-26 22:44:24,463 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3280 transitions. Word has length 290 [2020-10-26 22:44:24,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:24,464 INFO L481 AbstractCegarLoop]: Abstraction has 2602 states and 3280 transitions. [2020-10-26 22:44:24,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:24,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3280 transitions. [2020-10-26 22:44:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-26 22:44:24,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:24,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:24,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:44:24,475 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:24,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1549227210, now seen corresponding path program 1 times [2020-10-26 22:44:24,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:24,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053156512] [2020-10-26 22:44:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:24,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:26,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-26 22:44:26,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-26 22:44:26,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:44:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 22:44:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:26,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:26,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:26,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:44:26,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:27,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:27,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:27,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:44:27,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:44:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:44:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:27,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 22:44:27,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 22:44:27,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 22:44:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:44:27,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053156512] [2020-10-26 22:44:27,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:27,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:27,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17618417] [2020-10-26 22:44:27,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:27,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:27,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:27,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:27,412 INFO L87 Difference]: Start difference. First operand 2602 states and 3280 transitions. Second operand 7 states. [2020-10-26 22:44:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:31,681 INFO L93 Difference]: Finished difference Result 6233 states and 8299 transitions. [2020-10-26 22:44:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:44:31,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-26 22:44:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:31,705 INFO L225 Difference]: With dead ends: 6233 [2020-10-26 22:44:31,705 INFO L226 Difference]: Without dead ends: 4015 [2020-10-26 22:44:31,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2020-10-26 22:44:31,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3981. [2020-10-26 22:44:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3981 states. [2020-10-26 22:44:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5001 transitions. [2020-10-26 22:44:31,852 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5001 transitions. Word has length 308 [2020-10-26 22:44:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:31,852 INFO L481 AbstractCegarLoop]: Abstraction has 3981 states and 5001 transitions. [2020-10-26 22:44:31,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5001 transitions. [2020-10-26 22:44:31,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-26 22:44:31,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:31,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 22:44:31,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:44:31,868 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:31,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:31,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2006528498, now seen corresponding path program 1 times [2020-10-26 22:44:31,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:31,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184454167] [2020-10-26 22:44:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:31,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:32,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:34,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:36,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-26 22:44:36,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 22:44:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 22:44:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 22:44:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-26 22:44:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:37,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:37,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:37,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:37,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:44:37,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:37,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:37,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:37,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:37,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:44:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-26 22:44:37,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:44:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:44:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:37,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:37,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:37,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 22:44:37,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 22:44:37,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:44:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:38,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-26 22:44:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:38,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:38,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:44:38,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 22:44:38,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:38,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:38,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:44:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 336 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-26 22:44:38,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184454167] [2020-10-26 22:44:38,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:38,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:38,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152407157] [2020-10-26 22:44:38,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:44:38,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:38,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:44:38,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:44:38,563 INFO L87 Difference]: Start difference. First operand 3981 states and 5001 transitions. Second operand 8 states. [2020-10-26 22:44:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:41,905 INFO L93 Difference]: Finished difference Result 8981 states and 12075 transitions. [2020-10-26 22:44:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:44:41,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 365 [2020-10-26 22:44:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:41,937 INFO L225 Difference]: With dead ends: 8981 [2020-10-26 22:44:41,938 INFO L226 Difference]: Without dead ends: 5384 [2020-10-26 22:44:41,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:44:41,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2020-10-26 22:44:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4944. [2020-10-26 22:44:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4944 states. [2020-10-26 22:44:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 6265 transitions. [2020-10-26 22:44:42,112 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 6265 transitions. Word has length 365 [2020-10-26 22:44:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:42,113 INFO L481 AbstractCegarLoop]: Abstraction has 4944 states and 6265 transitions. [2020-10-26 22:44:42,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:44:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 6265 transitions. [2020-10-26 22:44:42,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-26 22:44:42,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:42,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:44:42,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:44:42,131 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:42,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:42,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1720391190, now seen corresponding path program 1 times [2020-10-26 22:44:42,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:42,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609088844] [2020-10-26 22:44:42,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:42,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:44,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:47,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:44:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:47,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:47,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:47,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:47,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:47,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:44:47,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:47,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:47,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:47,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:47,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:47,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 22:44:47,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:47,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:44:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:47,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:44:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:47,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:44:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:44:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-26 22:44:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 291 proven. 84 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:44:47,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609088844] [2020-10-26 22:44:47,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:47,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:47,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855331842] [2020-10-26 22:44:47,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:47,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:47,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:47,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:47,993 INFO L87 Difference]: Start difference. First operand 4944 states and 6265 transitions. Second operand 7 states. [2020-10-26 22:44:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:51,803 INFO L93 Difference]: Finished difference Result 12197 states and 15953 transitions. [2020-10-26 22:44:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:44:51,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-26 22:44:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:51,841 INFO L225 Difference]: With dead ends: 12197 [2020-10-26 22:44:51,841 INFO L226 Difference]: Without dead ends: 7637 [2020-10-26 22:44:51,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7637 states. [2020-10-26 22:44:52,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7637 to 7428. [2020-10-26 22:44:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7428 states. [2020-10-26 22:44:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 9619 transitions. [2020-10-26 22:44:52,082 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 9619 transitions. Word has length 392 [2020-10-26 22:44:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:52,083 INFO L481 AbstractCegarLoop]: Abstraction has 7428 states and 9619 transitions. [2020-10-26 22:44:52,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 9619 transitions. [2020-10-26 22:44:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-26 22:44:52,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:52,104 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:44:52,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:44:52,104 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:52,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1030508553, now seen corresponding path program 1 times [2020-10-26 22:44:52,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:52,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530599762] [2020-10-26 22:44:52,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:53,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:53,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-26 22:44:53,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1539 [2020-10-26 22:44:53,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:44:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:44:53,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:44:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:53,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:53,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:53,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:53,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:53,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:44:53,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:53,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:53,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:53,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:53,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:53,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:54,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:54,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:54,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 22:44:54,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:54,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:44:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:44:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:54,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:44:54,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 288 proven. 62 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 22:44:54,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530599762] [2020-10-26 22:44:54,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:54,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:44:54,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708856184] [2020-10-26 22:44:54,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:44:54,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:54,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:44:54,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:44:54,318 INFO L87 Difference]: Start difference. First operand 7428 states and 9619 transitions. Second operand 6 states. [2020-10-26 22:44:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:57,311 INFO L93 Difference]: Finished difference Result 14534 states and 19093 transitions. [2020-10-26 22:44:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:44:57,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 401 [2020-10-26 22:44:57,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:57,341 INFO L225 Difference]: With dead ends: 14534 [2020-10-26 22:44:57,341 INFO L226 Difference]: Without dead ends: 7490 [2020-10-26 22:44:57,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:44:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7490 states. [2020-10-26 22:44:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7490 to 7238. [2020-10-26 22:44:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7238 states. [2020-10-26 22:44:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 8942 transitions. [2020-10-26 22:44:57,582 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 8942 transitions. Word has length 401 [2020-10-26 22:44:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:57,583 INFO L481 AbstractCegarLoop]: Abstraction has 7238 states and 8942 transitions. [2020-10-26 22:44:57,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:44:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 8942 transitions. [2020-10-26 22:44:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-26 22:44:57,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:57,599 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:44:57,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:44:57,600 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash 91988199, now seen corresponding path program 1 times [2020-10-26 22:44:57,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:57,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080212629] [2020-10-26 22:44:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:58,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-26 22:44:58,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1210 [2020-10-26 22:44:58,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:44:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:44:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 22:44:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:59,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:44:59,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:59,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:59,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:44:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:59,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:59,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:44:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:44:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:59,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:59,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:44:59,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:59,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 22:44:59,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:59,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:44:59,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 298 proven. 62 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 22:44:59,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080212629] [2020-10-26 22:44:59,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:59,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:59,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677250622] [2020-10-26 22:44:59,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:59,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:59,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:59,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:59,704 INFO L87 Difference]: Start difference. First operand 7238 states and 8942 transitions. Second operand 7 states. [2020-10-26 22:45:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:03,556 INFO L93 Difference]: Finished difference Result 15659 states and 19615 transitions. [2020-10-26 22:45:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:45:03,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-26 22:45:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:03,586 INFO L225 Difference]: With dead ends: 15659 [2020-10-26 22:45:03,586 INFO L226 Difference]: Without dead ends: 8805 [2020-10-26 22:45:03,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:45:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8805 states. [2020-10-26 22:45:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8805 to 8413. [2020-10-26 22:45:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8413 states. [2020-10-26 22:45:03,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8413 states to 8413 states and 10388 transitions. [2020-10-26 22:45:03,804 INFO L78 Accepts]: Start accepts. Automaton has 8413 states and 10388 transitions. Word has length 406 [2020-10-26 22:45:03,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:03,805 INFO L481 AbstractCegarLoop]: Abstraction has 8413 states and 10388 transitions. [2020-10-26 22:45:03,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8413 states and 10388 transitions. [2020-10-26 22:45:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-26 22:45:03,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:03,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 22:45:03,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:45:03,823 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:03,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1529597950, now seen corresponding path program 1 times [2020-10-26 22:45:03,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:03,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603663530] [2020-10-26 22:45:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:03,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:05,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:07,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-26 22:45:07,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 22:45:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3858 [2020-10-26 22:45:07,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:07,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 370 [2020-10-26 22:45:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:07,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:07,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:45:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:08,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:08,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:08,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:45:08,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 22:45:08,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:08,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 22:45:08,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:08,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:45:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:08,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-26 22:45:08,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603663530] [2020-10-26 22:45:08,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:08,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:45:08,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860672032] [2020-10-26 22:45:08,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:45:08,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:45:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:45:08,556 INFO L87 Difference]: Start difference. First operand 8413 states and 10388 transitions. Second operand 5 states. [2020-10-26 22:45:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:10,529 INFO L93 Difference]: Finished difference Result 16435 states and 20368 transitions. [2020-10-26 22:45:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:45:10,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 430 [2020-10-26 22:45:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:10,560 INFO L225 Difference]: With dead ends: 16435 [2020-10-26 22:45:10,560 INFO L226 Difference]: Without dead ends: 8406 [2020-10-26 22:45:10,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:45:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8406 states. [2020-10-26 22:45:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8406 to 8395. [2020-10-26 22:45:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8395 states. [2020-10-26 22:45:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 10349 transitions. [2020-10-26 22:45:10,779 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 10349 transitions. Word has length 430 [2020-10-26 22:45:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:10,780 INFO L481 AbstractCegarLoop]: Abstraction has 8395 states and 10349 transitions. [2020-10-26 22:45:10,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:45:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 10349 transitions. [2020-10-26 22:45:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-10-26 22:45:10,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:10,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:10,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:45:10,801 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:10,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:10,802 INFO L82 PathProgramCache]: Analyzing trace with hash 967999380, now seen corresponding path program 1 times [2020-10-26 22:45:10,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:10,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399655397] [2020-10-26 22:45:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:11,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:11,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-26 22:45:11,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:11,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-26 22:45:11,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:45:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:45:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:11,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:11,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:11,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:45:11,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:11,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:12,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:45:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:12,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:45:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:12,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:12,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:45:12,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:12,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 22:45:12,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:45:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:45:12,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399655397] [2020-10-26 22:45:12,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:12,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:45:12,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610651969] [2020-10-26 22:45:12,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:45:12,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:12,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:45:12,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:45:12,766 INFO L87 Difference]: Start difference. First operand 8395 states and 10349 transitions. Second operand 8 states. [2020-10-26 22:45:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:16,187 INFO L93 Difference]: Finished difference Result 17946 states and 22231 transitions. [2020-10-26 22:45:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:45:16,193 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 453 [2020-10-26 22:45:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:16,227 INFO L225 Difference]: With dead ends: 17946 [2020-10-26 22:45:16,228 INFO L226 Difference]: Without dead ends: 9935 [2020-10-26 22:45:16,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:45:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9935 states. [2020-10-26 22:45:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9935 to 9352. [2020-10-26 22:45:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9352 states. [2020-10-26 22:45:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 11529 transitions. [2020-10-26 22:45:16,475 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 11529 transitions. Word has length 453 [2020-10-26 22:45:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:16,476 INFO L481 AbstractCegarLoop]: Abstraction has 9352 states and 11529 transitions. [2020-10-26 22:45:16,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:45:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 11529 transitions. [2020-10-26 22:45:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-26 22:45:16,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:16,505 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:16,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:45:16,505 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:16,506 INFO L82 PathProgramCache]: Analyzing trace with hash 38767203, now seen corresponding path program 1 times [2020-10-26 22:45:16,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:16,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498383424] [2020-10-26 22:45:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2286 [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 22:45:18,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:19,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:19,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:45:19,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:19,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:19,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:19,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:45:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:19,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:19,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:45:19,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 22:45:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:45:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:19,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:45:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:19,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:45:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-26 22:45:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:19,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:19,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:45:19,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:19,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 22:45:19,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:45:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:19,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 465 proven. 89 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-26 22:45:19,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498383424] [2020-10-26 22:45:19,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:19,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:19,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861597430] [2020-10-26 22:45:19,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:19,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:19,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:19,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:19,770 INFO L87 Difference]: Start difference. First operand 9352 states and 11529 transitions. Second operand 7 states. [2020-10-26 22:45:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:23,498 INFO L93 Difference]: Finished difference Result 18948 states and 23353 transitions. [2020-10-26 22:45:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:45:23,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 535 [2020-10-26 22:45:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:23,532 INFO L225 Difference]: With dead ends: 18948 [2020-10-26 22:45:23,532 INFO L226 Difference]: Without dead ends: 9980 [2020-10-26 22:45:23,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:45:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9980 states. [2020-10-26 22:45:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9980 to 9970. [2020-10-26 22:45:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9970 states. [2020-10-26 22:45:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9970 states to 9970 states and 12124 transitions. [2020-10-26 22:45:23,805 INFO L78 Accepts]: Start accepts. Automaton has 9970 states and 12124 transitions. Word has length 535 [2020-10-26 22:45:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:23,806 INFO L481 AbstractCegarLoop]: Abstraction has 9970 states and 12124 transitions. [2020-10-26 22:45:23,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 9970 states and 12124 transitions. [2020-10-26 22:45:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-26 22:45:23,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:23,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:23,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:45:23,830 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1497280381, now seen corresponding path program 1 times [2020-10-26 22:45:23,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:23,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942287070] [2020-10-26 22:45:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:26,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-26 22:45:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:29,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:29,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:45:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:45:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:45:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:45:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:29,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:45:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:29,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-26 22:45:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:29,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:45:29,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:29,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 22:45:29,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:45:29,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 261 proven. 536 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 22:45:30,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942287070] [2020-10-26 22:45:30,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:30,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:45:30,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900842180] [2020-10-26 22:45:30,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:45:30,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:45:30,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:45:30,293 INFO L87 Difference]: Start difference. First operand 9970 states and 12124 transitions. Second operand 10 states. [2020-10-26 22:45:38,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:38,134 INFO L93 Difference]: Finished difference Result 31334 states and 38690 transitions. [2020-10-26 22:45:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 22:45:38,136 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 555 [2020-10-26 22:45:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:38,208 INFO L225 Difference]: With dead ends: 31334 [2020-10-26 22:45:38,208 INFO L226 Difference]: Without dead ends: 21748 [2020-10-26 22:45:38,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:45:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21748 states. [2020-10-26 22:45:38,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21748 to 20657. [2020-10-26 22:45:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20657 states. [2020-10-26 22:45:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20657 states to 20657 states and 24740 transitions. [2020-10-26 22:45:38,723 INFO L78 Accepts]: Start accepts. Automaton has 20657 states and 24740 transitions. Word has length 555 [2020-10-26 22:45:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:38,723 INFO L481 AbstractCegarLoop]: Abstraction has 20657 states and 24740 transitions. [2020-10-26 22:45:38,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:45:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 20657 states and 24740 transitions. [2020-10-26 22:45:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-26 22:45:38,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:38,766 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:38,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:45:38,767 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:38,767 INFO L82 PathProgramCache]: Analyzing trace with hash -639290429, now seen corresponding path program 1 times [2020-10-26 22:45:38,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:38,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409066645] [2020-10-26 22:45:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:40,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:43,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:43,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 708 [2020-10-26 22:45:43,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:45:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 22:45:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-26 22:45:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 22:45:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:44,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:44,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:44,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:44,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:45:44,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:44,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:44,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:44,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:44,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:45:44,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:45:44,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:45:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:44,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:45:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 22:45:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:44,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-26 22:45:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:44,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:45:44,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 22:45:44,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 22:45:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:44,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-10-26 22:45:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:44,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:44,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:45:44,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 22:45:44,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:45:44,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:44,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 566 proven. 193 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2020-10-26 22:45:45,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409066645] [2020-10-26 22:45:45,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:45,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:45,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100362143] [2020-10-26 22:45:45,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:45,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:45,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:45,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:45,166 INFO L87 Difference]: Start difference. First operand 20657 states and 24740 transitions. Second operand 7 states. [2020-10-26 22:45:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:50,189 INFO L93 Difference]: Finished difference Result 40740 states and 48781 transitions. [2020-10-26 22:45:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:45:50,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 688 [2020-10-26 22:45:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:50,250 INFO L225 Difference]: With dead ends: 40740 [2020-10-26 22:45:50,251 INFO L226 Difference]: Without dead ends: 22543 [2020-10-26 22:45:50,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:45:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22543 states. [2020-10-26 22:45:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22543 to 19707. [2020-10-26 22:45:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19707 states. [2020-10-26 22:45:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19707 states to 19707 states and 23561 transitions. [2020-10-26 22:45:50,733 INFO L78 Accepts]: Start accepts. Automaton has 19707 states and 23561 transitions. Word has length 688 [2020-10-26 22:45:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:50,734 INFO L481 AbstractCegarLoop]: Abstraction has 19707 states and 23561 transitions. [2020-10-26 22:45:50,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 19707 states and 23561 transitions. [2020-10-26 22:45:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2020-10-26 22:45:50,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:50,759 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:50,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:45:50,759 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:50,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:50,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2062740467, now seen corresponding path program 1 times [2020-10-26 22:45:50,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:50,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882009013] [2020-10-26 22:45:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:56,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:56,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 744 [2020-10-26 22:45:56,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:45:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 22:45:56,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:45:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 22:45:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:56,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:56,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:56,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:56,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:45:56,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:56,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:56,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:45:56,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:56,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 22:45:56,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:56,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:56,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:45:56,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:56,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:45:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:56,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 22:45:56,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:56,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 22:45:56,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 22:45:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-26 22:45:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:56,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:56,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 22:45:56,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:45:56,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 22:45:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-10-26 22:45:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:56,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:56,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:56,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:45:56,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:45:56,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 22:45:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-26 22:45:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:56,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:45:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:45:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:45:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 440 proven. 346 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2020-10-26 22:45:57,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882009013] [2020-10-26 22:45:57,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:57,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:57,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671542508] [2020-10-26 22:45:57,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:57,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:57,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:57,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:57,409 INFO L87 Difference]: Start difference. First operand 19707 states and 23561 transitions. Second operand 7 states. [2020-10-26 22:46:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:01,292 INFO L93 Difference]: Finished difference Result 42122 states and 50478 transitions. [2020-10-26 22:46:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:46:01,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 724 [2020-10-26 22:46:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:01,353 INFO L225 Difference]: With dead ends: 42122 [2020-10-26 22:46:01,353 INFO L226 Difference]: Without dead ends: 22799 [2020-10-26 22:46:01,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22799 states. [2020-10-26 22:46:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22799 to 22589. [2020-10-26 22:46:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22589 states. [2020-10-26 22:46:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22589 states to 22589 states and 26761 transitions. [2020-10-26 22:46:02,044 INFO L78 Accepts]: Start accepts. Automaton has 22589 states and 26761 transitions. Word has length 724 [2020-10-26 22:46:02,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:02,044 INFO L481 AbstractCegarLoop]: Abstraction has 22589 states and 26761 transitions. [2020-10-26 22:46:02,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:02,044 INFO L276 IsEmpty]: Start isEmpty. Operand 22589 states and 26761 transitions. [2020-10-26 22:46:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-26 22:46:02,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:02,076 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:02,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:46:02,076 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:02,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:02,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1690160513, now seen corresponding path program 1 times [2020-10-26 22:46:02,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:02,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857838350] [2020-10-26 22:46:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:07,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 749 [2020-10-26 22:46:07,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 22:46:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:46:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 22:46:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:07,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:07,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:07,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:07,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:07,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:07,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:46:07,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:46:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:07,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:46:07,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 22:46:07,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:07,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 22:46:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:07,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-26 22:46:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:07,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:07,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 22:46:07,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:07,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 22:46:07,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:07,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:07,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 22:46:07,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:07,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-26 22:46:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:08,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:08,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:46:08,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 22:46:08,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 22:46:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:08,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:08,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2020-10-26 22:46:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:08,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:08,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:46:08,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:08,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:46:08,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:46:08,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:08,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1389 backedges. 430 proven. 361 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2020-10-26 22:46:08,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857838350] [2020-10-26 22:46:08,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:08,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:08,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242561831] [2020-10-26 22:46:08,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:08,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:08,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:08,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:08,606 INFO L87 Difference]: Start difference. First operand 22589 states and 26761 transitions. Second operand 7 states. [2020-10-26 22:46:12,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:12,470 INFO L93 Difference]: Finished difference Result 46451 states and 55846 transitions. [2020-10-26 22:46:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:46:12,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 729 [2020-10-26 22:46:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:12,542 INFO L225 Difference]: With dead ends: 46451 [2020-10-26 22:46:12,542 INFO L226 Difference]: Without dead ends: 24246 [2020-10-26 22:46:12,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24246 states. [2020-10-26 22:46:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24246 to 24109. [2020-10-26 22:46:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24109 states. [2020-10-26 22:46:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24109 states to 24109 states and 28464 transitions. [2020-10-26 22:46:13,251 INFO L78 Accepts]: Start accepts. Automaton has 24109 states and 28464 transitions. Word has length 729 [2020-10-26 22:46:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:13,252 INFO L481 AbstractCegarLoop]: Abstraction has 24109 states and 28464 transitions. [2020-10-26 22:46:13,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 24109 states and 28464 transitions. [2020-10-26 22:46:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2020-10-26 22:46:13,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:13,286 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2020-10-26 22:46:13,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:46:13,286 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:13,287 INFO L82 PathProgramCache]: Analyzing trace with hash -123983029, now seen corresponding path program 1 times [2020-10-26 22:46:13,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:13,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504200132] [2020-10-26 22:46:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:14,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:18,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 755 [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 22:46:18,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:18,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:18,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:18,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:18,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:18,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:46:18,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:18,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:18,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:18,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:18,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:18,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:46:18,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 22:46:18,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:18,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:18,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:46:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:18,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:18,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:46:18,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:46:18,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:46:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:18,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 22:46:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:46:18,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:46:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-26 22:46:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:19,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:46:19,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 22:46:19,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:19,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:46:19,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-10-26 22:46:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-26 22:46:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:19,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:19,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 649 proven. 168 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2020-10-26 22:46:19,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504200132] [2020-10-26 22:46:19,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:19,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:19,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155099398] [2020-10-26 22:46:19,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:19,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:19,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:19,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:19,609 INFO L87 Difference]: Start difference. First operand 24109 states and 28464 transitions. Second operand 7 states. [2020-10-26 22:46:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:23,568 INFO L93 Difference]: Finished difference Result 50547 states and 59714 transitions. [2020-10-26 22:46:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:46:23,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 733 [2020-10-26 22:46:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:23,643 INFO L225 Difference]: With dead ends: 50547 [2020-10-26 22:46:23,643 INFO L226 Difference]: Without dead ends: 26822 [2020-10-26 22:46:23,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26822 states. [2020-10-26 22:46:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26822 to 25843. [2020-10-26 22:46:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25843 states. [2020-10-26 22:46:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25843 states to 25843 states and 30346 transitions. [2020-10-26 22:46:24,284 INFO L78 Accepts]: Start accepts. Automaton has 25843 states and 30346 transitions. Word has length 733 [2020-10-26 22:46:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:24,285 INFO L481 AbstractCegarLoop]: Abstraction has 25843 states and 30346 transitions. [2020-10-26 22:46:24,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25843 states and 30346 transitions. [2020-10-26 22:46:24,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2020-10-26 22:46:24,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:24,327 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-26 22:46:24,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:46:24,328 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:24,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1725506538, now seen corresponding path program 1 times [2020-10-26 22:46:24,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:24,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95629844] [2020-10-26 22:46:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:24,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:29,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:29,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 752 [2020-10-26 22:46:29,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 22:46:29,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 22:46:29,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:29,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:46:29,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:29,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:29,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:29,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:46:29,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:29,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:29,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:29,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:46:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 22:46:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:46:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:46:30,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:30,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 22:46:30,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:46:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:30,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-26 22:46:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-26 22:46:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-26 22:46:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 22:46:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:30,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-26 22:46:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 320 proven. 6 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-26 22:46:30,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95629844] [2020-10-26 22:46:30,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:30,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:46:30,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686673214] [2020-10-26 22:46:30,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:46:30,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:30,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:46:30,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:46:30,748 INFO L87 Difference]: Start difference. First operand 25843 states and 30346 transitions. Second operand 5 states. [2020-10-26 22:46:33,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:33,026 INFO L93 Difference]: Finished difference Result 48116 states and 56566 transitions. [2020-10-26 22:46:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:46:33,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 732 [2020-10-26 22:46:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:33,098 INFO L225 Difference]: With dead ends: 48116 [2020-10-26 22:46:33,099 INFO L226 Difference]: Without dead ends: 25681 [2020-10-26 22:46:33,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:46:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25681 states. [2020-10-26 22:46:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25681 to 25645. [2020-10-26 22:46:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25645 states. [2020-10-26 22:46:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25645 states to 25645 states and 30086 transitions. [2020-10-26 22:46:33,628 INFO L78 Accepts]: Start accepts. Automaton has 25645 states and 30086 transitions. Word has length 732 [2020-10-26 22:46:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:33,629 INFO L481 AbstractCegarLoop]: Abstraction has 25645 states and 30086 transitions. [2020-10-26 22:46:33,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:46:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 25645 states and 30086 transitions. [2020-10-26 22:46:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2020-10-26 22:46:33,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:33,669 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:33,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:46:33,669 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:33,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:33,670 INFO L82 PathProgramCache]: Analyzing trace with hash -424665496, now seen corresponding path program 1 times [2020-10-26 22:46:33,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:33,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638373132] [2020-10-26 22:46:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:38,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 768 [2020-10-26 22:46:38,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 22:46:38,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-26 22:46:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 22:46:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:39,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:46:39,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:39,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:39,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:46:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:46:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:46:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-26 22:46:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 22:46:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:39,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-10-26 22:46:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:39,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:46:39,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 22:46:39,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 22:46:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-10-26 22:46:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:39,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:46:39,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 22:46:39,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:46:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 695 proven. 193 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2020-10-26 22:46:40,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638373132] [2020-10-26 22:46:40,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:40,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:40,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938145389] [2020-10-26 22:46:40,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:40,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:40,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:40,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:40,459 INFO L87 Difference]: Start difference. First operand 25645 states and 30086 transitions. Second operand 7 states. [2020-10-26 22:46:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:45,223 INFO L93 Difference]: Finished difference Result 50980 states and 60100 transitions. [2020-10-26 22:46:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:46:45,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 746 [2020-10-26 22:46:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:45,277 INFO L225 Difference]: With dead ends: 50980 [2020-10-26 22:46:45,277 INFO L226 Difference]: Without dead ends: 25529 [2020-10-26 22:46:45,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25529 states. [2020-10-26 22:46:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25529 to 25071. [2020-10-26 22:46:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25071 states. [2020-10-26 22:46:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25071 states to 25071 states and 29030 transitions. [2020-10-26 22:46:46,001 INFO L78 Accepts]: Start accepts. Automaton has 25071 states and 29030 transitions. Word has length 746 [2020-10-26 22:46:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:46,001 INFO L481 AbstractCegarLoop]: Abstraction has 25071 states and 29030 transitions. [2020-10-26 22:46:46,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 25071 states and 29030 transitions. [2020-10-26 22:46:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2020-10-26 22:46:46,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:46,046 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:46,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:46:46,046 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:46,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:46,047 INFO L82 PathProgramCache]: Analyzing trace with hash -787264202, now seen corresponding path program 1 times [2020-10-26 22:46:46,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:46,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644344352] [2020-10-26 22:46:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:46,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:46,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 776 [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-26 22:46:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:51,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:51,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:51,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:46:51,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:51,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:51,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:46:51,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:46:51,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:51,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:51,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:51,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:46:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:51,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:46:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:46:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:51,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:46:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:51,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:46:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-26 22:46:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:51,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:51,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 22:46:51,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:51,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-26 22:46:51,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-26 22:46:51,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-26 22:46:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:52,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:46:52,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:46:52,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-26 22:46:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-10-26 22:46:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:52,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 695 proven. 222 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2020-10-26 22:46:52,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644344352] [2020-10-26 22:46:52,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:52,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:52,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705852338] [2020-10-26 22:46:52,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:52,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:52,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:52,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:52,558 INFO L87 Difference]: Start difference. First operand 25071 states and 29030 transitions. Second operand 7 states. [2020-10-26 22:46:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:58,018 INFO L93 Difference]: Finished difference Result 51490 states and 59637 transitions. [2020-10-26 22:46:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:46:58,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 754 [2020-10-26 22:46:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:58,075 INFO L225 Difference]: With dead ends: 51490 [2020-10-26 22:46:58,076 INFO L226 Difference]: Without dead ends: 26803 [2020-10-26 22:46:58,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:58,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26803 states. [2020-10-26 22:46:58,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26803 to 26771. [2020-10-26 22:46:58,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26771 states. [2020-10-26 22:46:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26771 states to 26771 states and 30702 transitions. [2020-10-26 22:46:58,583 INFO L78 Accepts]: Start accepts. Automaton has 26771 states and 30702 transitions. Word has length 754 [2020-10-26 22:46:58,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:58,583 INFO L481 AbstractCegarLoop]: Abstraction has 26771 states and 30702 transitions. [2020-10-26 22:46:58,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 26771 states and 30702 transitions. [2020-10-26 22:46:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-26 22:46:58,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:58,619 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:58,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:46:58,619 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash 837980946, now seen corresponding path program 1 times [2020-10-26 22:46:58,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:58,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198157950] [2020-10-26 22:46:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking...