/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_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:46:16,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:46:16,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:46:16,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:46:16,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:46:16,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:46:16,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:46:16,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:46:16,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:46:16,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:46:16,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:46:16,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:46:16,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:46:16,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:46:16,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:46:16,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:46:16,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:46:16,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:46:16,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:46:16,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:46:16,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:46:16,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:46:16,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:46:16,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:46:16,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:46:16,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:46:16,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:46:16,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:46:16,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:46:16,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:46:16,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:46:16,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:46:16,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:46:16,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:46:16,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:46:16,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:46:16,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:46:16,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:46:16,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:46:16,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:46:16,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:46:16,469 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 22:46:16,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:46:16,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:46:16,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:46:16,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:46:16,510 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:46:16,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:46:16,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:46:16,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:46:16,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:46:16,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:46:16,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:46:16,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:46:16,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:46:16,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:46:16,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:46:16,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:46:16,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:46:16,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:46:16,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:46:16,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:46:16,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:46:16,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:46:16,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:46:16,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:46:16,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:46:16,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:46:16,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:46:16,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:46:16,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:46:16,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:46:17,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:46:17,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:46:17,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:46:17,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:46:17,070 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:46:17,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label59.c [2020-10-26 22:46:17,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63377a308/58daf5ed63e54842987771dac86f2511/FLAG2665a7c42 [2020-10-26 22:46:17,979 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:46:17,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label59.c [2020-10-26 22:46:18,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63377a308/58daf5ed63e54842987771dac86f2511/FLAG2665a7c42 [2020-10-26 22:46:18,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63377a308/58daf5ed63e54842987771dac86f2511 [2020-10-26 22:46:18,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:46:18,186 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:46:18,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:46:18,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:46:18,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:46:18,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:46:18" (1/1) ... [2020-10-26 22:46:18,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da8912c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:18, skipping insertion in model container [2020-10-26 22:46:18,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:46:18" (1/1) ... [2020-10-26 22:46:18,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:46:18,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:46:18,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:46:18,998 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:46:19,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:46:19,179 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:46:19,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19 WrapperNode [2020-10-26 22:46:19,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:46:19,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:46:19,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:46:19,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:46:19,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (1/1) ... [2020-10-26 22:46:19,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (1/1) ... [2020-10-26 22:46:19,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (1/1) ... [2020-10-26 22:46:19,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (1/1) ... [2020-10-26 22:46:19,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (1/1) ... [2020-10-26 22:46:19,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (1/1) ... [2020-10-26 22:46:19,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (1/1) ... [2020-10-26 22:46:19,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:46:19,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:46:19,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:46:19,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:46:19,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (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 22:46:19,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:46:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:46:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:46:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:46:19,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:46:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:46:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:46:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:46:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:46:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:46:19,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:46:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:46:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:46:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:46:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:46:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:46:19,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:46:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:46:19,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:46:21,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:46:21,483 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:46:21,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:46:21 BoogieIcfgContainer [2020-10-26 22:46:21,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:46:21,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:46:21,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:46:21,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:46:21,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:46:18" (1/3) ... [2020-10-26 22:46:21,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da035e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:46:21, skipping insertion in model container [2020-10-26 22:46:21,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:46:19" (2/3) ... [2020-10-26 22:46:21,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da035e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:46:21, skipping insertion in model container [2020-10-26 22:46:21,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:46:21" (3/3) ... [2020-10-26 22:46:21,496 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label59.c [2020-10-26 22:46:21,509 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:46:21,515 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:46:21,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:46:21,560 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:46:21,560 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:46:21,560 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:46:21,561 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:46:21,561 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:46:21,561 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:46:21,561 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:46:21,561 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:46:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:46:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-26 22:46:21,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:21,598 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] [2020-10-26 22:46:21,598 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:21,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:21,605 INFO L82 PathProgramCache]: Analyzing trace with hash -26578648, now seen corresponding path program 1 times [2020-10-26 22:46:21,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:21,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276852720] [2020-10-26 22:46:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:22,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:22,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:46:22,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-26 22:46:22,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:46:22,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:22,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-26 22:46:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:46:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:22,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:22,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:22,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:22,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:46:22,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:22,936 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 22:46:22,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276852720] [2020-10-26 22:46:22,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:46:22,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 22:46:22,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984307564] [2020-10-26 22:46:22,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:46:22,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:46:22,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:46:22,973 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-26 22:46:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:26,161 INFO L93 Difference]: Finished difference Result 798 states and 1400 transitions. [2020-10-26 22:46:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:46:26,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-26 22:46:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:26,187 INFO L225 Difference]: With dead ends: 798 [2020-10-26 22:46:26,187 INFO L226 Difference]: Without dead ends: 438 [2020-10-26 22:46:26,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:46:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-26 22:46:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 423. [2020-10-26 22:46:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-26 22:46:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 674 transitions. [2020-10-26 22:46:26,297 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 674 transitions. Word has length 66 [2020-10-26 22:46:26,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:26,298 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 674 transitions. [2020-10-26 22:46:26,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:46:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 674 transitions. [2020-10-26 22:46:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-26 22:46:26,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:26,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:46:26,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:46:26,306 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:26,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:26,307 INFO L82 PathProgramCache]: Analyzing trace with hash -297540852, now seen corresponding path program 1 times [2020-10-26 22:46:26,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:26,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262090825] [2020-10-26 22:46:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:28,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:28,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-26 22:46:28,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-26 22:46:28,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:28,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:46:28,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:28,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:46:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:28,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:28,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:28,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:28,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 22:46:28,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:28,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:28,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:28,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:28,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:28,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:46:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 22:46:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:46:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:46:29,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262090825] [2020-10-26 22:46:29,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:46:29,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:46:29,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330090589] [2020-10-26 22:46:29,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:29,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:29,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:29,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:29,094 INFO L87 Difference]: Start difference. First operand 423 states and 674 transitions. Second operand 7 states. [2020-10-26 22:46:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:32,318 INFO L93 Difference]: Finished difference Result 1070 states and 1732 transitions. [2020-10-26 22:46:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:46:32,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-26 22:46:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:32,327 INFO L225 Difference]: With dead ends: 1070 [2020-10-26 22:46:32,327 INFO L226 Difference]: Without dead ends: 653 [2020-10-26 22:46:32,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:46:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-26 22:46:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 622. [2020-10-26 22:46:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-26 22:46:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 909 transitions. [2020-10-26 22:46:32,380 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 909 transitions. Word has length 135 [2020-10-26 22:46:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:32,381 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 909 transitions. [2020-10-26 22:46:32,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 909 transitions. [2020-10-26 22:46:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-26 22:46:32,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:32,385 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, 1, 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 22:46:32,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:46:32,385 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 349567236, now seen corresponding path program 1 times [2020-10-26 22:46:32,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:32,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340251553] [2020-10-26 22:46:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:32,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:32,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:33,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:35,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:35,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-26 22:46:35,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3440 [2020-10-26 22:46:35,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:46:35,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:46:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:36,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:36,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:36,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:46:36,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:36,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:36,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:36,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:46:36,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:36,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 22:46:36,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:46:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:46:36,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340251553] [2020-10-26 22:46:36,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:46:36,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:46:36,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648312719] [2020-10-26 22:46:36,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:36,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:36,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:36,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:36,426 INFO L87 Difference]: Start difference. First operand 622 states and 909 transitions. Second operand 7 states. [2020-10-26 22:46:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:39,988 INFO L93 Difference]: Finished difference Result 1668 states and 2484 transitions. [2020-10-26 22:46:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:46:39,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-26 22:46:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:40,002 INFO L225 Difference]: With dead ends: 1668 [2020-10-26 22:46:40,003 INFO L226 Difference]: Without dead ends: 1052 [2020-10-26 22:46:40,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:46:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-26 22:46:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1019. [2020-10-26 22:46:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-10-26 22:46:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1344 transitions. [2020-10-26 22:46:40,099 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1344 transitions. Word has length 139 [2020-10-26 22:46:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:40,100 INFO L481 AbstractCegarLoop]: Abstraction has 1019 states and 1344 transitions. [2020-10-26 22:46:40,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1344 transitions. [2020-10-26 22:46:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-26 22:46:40,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:40,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:40,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:46:40,116 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:40,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:40,119 INFO L82 PathProgramCache]: Analyzing trace with hash -475258979, now seen corresponding path program 1 times [2020-10-26 22:46:40,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:40,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791669881] [2020-10-26 22:46:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:40,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:42,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-26 22:46:42,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1902 [2020-10-26 22:46:42,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:46:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:46:42,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 22:46:42,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:42,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 22:46:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:42,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:42,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-26 22:46:42,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:46:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:46:42,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791669881] [2020-10-26 22:46:42,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:46:42,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:46:42,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117323525] [2020-10-26 22:46:42,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:42,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:42,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:42,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:42,871 INFO L87 Difference]: Start difference. First operand 1019 states and 1344 transitions. Second operand 7 states. [2020-10-26 22:46:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:46,190 INFO L93 Difference]: Finished difference Result 2477 states and 3555 transitions. [2020-10-26 22:46:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:46:46,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-26 22:46:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:46,201 INFO L225 Difference]: With dead ends: 2477 [2020-10-26 22:46:46,202 INFO L226 Difference]: Without dead ends: 1652 [2020-10-26 22:46:46,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-10-26 22:46:46,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1616. [2020-10-26 22:46:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2020-10-26 22:46:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2089 transitions. [2020-10-26 22:46:46,289 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2089 transitions. Word has length 197 [2020-10-26 22:46:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:46,291 INFO L481 AbstractCegarLoop]: Abstraction has 1616 states and 2089 transitions. [2020-10-26 22:46:46,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2089 transitions. [2020-10-26 22:46:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-26 22:46:46,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:46,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:46,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:46:46,298 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:46,299 INFO L82 PathProgramCache]: Analyzing trace with hash 81703718, now seen corresponding path program 1 times [2020-10-26 22:46:46,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:46,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489011102] [2020-10-26 22:46:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:46,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:46,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-26 22:46:46,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-26 22:46:46,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:46:46,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 22:46:46,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:46,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:46,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:46,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:46,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:46,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:46:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:47,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:47,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:46:47,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:47,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 22:46:47,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:47,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:46:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:46:47,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489011102] [2020-10-26 22:46:47,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:47,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:46:47,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113389924] [2020-10-26 22:46:47,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:46:47,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:46:47,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:46:47,304 INFO L87 Difference]: Start difference. First operand 1616 states and 2089 transitions. Second operand 5 states. [2020-10-26 22:46:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:50,505 INFO L93 Difference]: Finished difference Result 4008 states and 5392 transitions. [2020-10-26 22:46:50,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:46:50,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-26 22:46:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:50,526 INFO L225 Difference]: With dead ends: 4008 [2020-10-26 22:46:50,527 INFO L226 Difference]: Without dead ends: 2586 [2020-10-26 22:46:50,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:46:50,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2020-10-26 22:46:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2393. [2020-10-26 22:46:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2020-10-26 22:46:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3056 transitions. [2020-10-26 22:46:50,611 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3056 transitions. Word has length 213 [2020-10-26 22:46:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:50,612 INFO L481 AbstractCegarLoop]: Abstraction has 2393 states and 3056 transitions. [2020-10-26 22:46:50,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:46:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3056 transitions. [2020-10-26 22:46:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-26 22:46:50,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:50,618 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, 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] [2020-10-26 22:46:50,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:46:50,618 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:50,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1034806586, now seen corresponding path program 1 times [2020-10-26 22:46:50,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:50,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004347147] [2020-10-26 22:46:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:50,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:53,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-26 22:46:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2519 [2020-10-26 22:46:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:46:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:46:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:53,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:53,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:53,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:46:53,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:53,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:53,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:53,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:53,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:46:53,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:53,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:53,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:46:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:53,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:53,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:53,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:46:53,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 22:46:53,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:46:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:46:53,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004347147] [2020-10-26 22:46:53,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:53,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:46:53,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014534707] [2020-10-26 22:46:53,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:46:53,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:53,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:46:53,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:46:53,989 INFO L87 Difference]: Start difference. First operand 2393 states and 3056 transitions. Second operand 8 states. [2020-10-26 22:46:57,382 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 22:46:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:57,595 INFO L93 Difference]: Finished difference Result 5371 states and 6998 transitions. [2020-10-26 22:46:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:46:57,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 254 [2020-10-26 22:46:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:57,618 INFO L225 Difference]: With dead ends: 5371 [2020-10-26 22:46:57,619 INFO L226 Difference]: Without dead ends: 3172 [2020-10-26 22:46:57,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:46:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2020-10-26 22:46:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 2977. [2020-10-26 22:46:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2977 states. [2020-10-26 22:46:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 3861 transitions. [2020-10-26 22:46:57,728 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 3861 transitions. Word has length 254 [2020-10-26 22:46:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:57,728 INFO L481 AbstractCegarLoop]: Abstraction has 2977 states and 3861 transitions. [2020-10-26 22:46:57,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:46:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 3861 transitions. [2020-10-26 22:46:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 22:46:57,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:57,734 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, 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] [2020-10-26 22:46:57,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:46:57,735 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1992933550, now seen corresponding path program 1 times [2020-10-26 22:46:57,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:57,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638964606] [2020-10-26 22:46:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:02,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:02,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-26 22:47:02,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-10-26 22:47:02,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:47:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:47:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:47:02,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:02,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:02,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:47:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:03,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:03,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:47:03,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 22:47:03,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:47:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:03,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:47:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:03,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:03,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:47:03,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 22:47:03,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:47:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:03,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:47:03,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 168 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:47:03,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638964606] [2020-10-26 22:47:03,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:03,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:47:03,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089768244] [2020-10-26 22:47:03,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:47:03,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:03,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:47:03,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:47:03,930 INFO L87 Difference]: Start difference. First operand 2977 states and 3861 transitions. Second operand 9 states. [2020-10-26 22:47:05,212 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:47:06,028 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-26 22:47:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:07,258 INFO L93 Difference]: Finished difference Result 7193 states and 9357 transitions. [2020-10-26 22:47:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:47:07,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 255 [2020-10-26 22:47:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:07,291 INFO L225 Difference]: With dead ends: 7193 [2020-10-26 22:47:07,291 INFO L226 Difference]: Without dead ends: 4386 [2020-10-26 22:47:07,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:47:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2020-10-26 22:47:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4360. [2020-10-26 22:47:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4360 states. [2020-10-26 22:47:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 5580 transitions. [2020-10-26 22:47:07,451 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 5580 transitions. Word has length 255 [2020-10-26 22:47:07,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:07,452 INFO L481 AbstractCegarLoop]: Abstraction has 4360 states and 5580 transitions. [2020-10-26 22:47:07,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:47:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 5580 transitions. [2020-10-26 22:47:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-26 22:47:07,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:07,461 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, 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] [2020-10-26 22:47:07,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:47:07,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:07,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:07,462 INFO L82 PathProgramCache]: Analyzing trace with hash 656945574, now seen corresponding path program 1 times [2020-10-26 22:47:07,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:07,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322688002] [2020-10-26 22:47:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:09,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-26 22:47:09,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-10-26 22:47:09,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:47:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 22:47:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:47:09,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:09,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:09,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:09,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:47:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:09,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:09,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:09,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:47:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:47:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:47:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:47:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:09,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:09,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:09,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 22:47:09,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 22:47:09,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:47:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:47:09,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322688002] [2020-10-26 22:47:09,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:09,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:09,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223270127] [2020-10-26 22:47:09,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:09,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:09,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:09,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:09,959 INFO L87 Difference]: Start difference. First operand 4360 states and 5580 transitions. Second operand 7 states. [2020-10-26 22:47:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:13,804 INFO L93 Difference]: Finished difference Result 8957 states and 11753 transitions. [2020-10-26 22:47:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:47:13,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-26 22:47:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:13,837 INFO L225 Difference]: With dead ends: 8957 [2020-10-26 22:47:13,838 INFO L226 Difference]: Without dead ends: 4981 [2020-10-26 22:47:13,851 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 22:47:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4981 states. [2020-10-26 22:47:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4981 to 4966. [2020-10-26 22:47:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4966 states. [2020-10-26 22:47:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 6383 transitions. [2020-10-26 22:47:14,011 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 6383 transitions. Word has length 259 [2020-10-26 22:47:14,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:14,011 INFO L481 AbstractCegarLoop]: Abstraction has 4966 states and 6383 transitions. [2020-10-26 22:47:14,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 6383 transitions. [2020-10-26 22:47:14,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-26 22:47:14,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:14,019 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, 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] [2020-10-26 22:47:14,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:47:14,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1841083271, now seen corresponding path program 1 times [2020-10-26 22:47:14,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:14,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497252051] [2020-10-26 22:47:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-26 22:47:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:47:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-26 22:47:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:47:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:47:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:16,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:47:16,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:16,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:16,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:16,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:16,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 22:47:16,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:16,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:16,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:47:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:47:16,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 22:47:16,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:47:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:47:16,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497252051] [2020-10-26 22:47:16,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:16,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:16,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948461096] [2020-10-26 22:47:16,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:16,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:16,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:16,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:16,968 INFO L87 Difference]: Start difference. First operand 4966 states and 6383 transitions. Second operand 7 states. [2020-10-26 22:47:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:21,617 INFO L93 Difference]: Finished difference Result 10930 states and 14461 transitions. [2020-10-26 22:47:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:47:21,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-26 22:47:21,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:21,649 INFO L225 Difference]: With dead ends: 10930 [2020-10-26 22:47:21,649 INFO L226 Difference]: Without dead ends: 6348 [2020-10-26 22:47:21,661 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 22:47:21,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2020-10-26 22:47:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 5562. [2020-10-26 22:47:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2020-10-26 22:47:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7185 transitions. [2020-10-26 22:47:21,830 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7185 transitions. Word has length 266 [2020-10-26 22:47:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:21,831 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 7185 transitions. [2020-10-26 22:47:21,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7185 transitions. [2020-10-26 22:47:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-26 22:47:21,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:21,840 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:21,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:47:21,841 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -710521241, now seen corresponding path program 1 times [2020-10-26 22:47:21,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:21,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823074017] [2020-10-26 22:47:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:23,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:23,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-26 22:47:23,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:47:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2006 [2020-10-26 22:47:23,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:47:23,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 22:47:23,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:24,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:24,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:24,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:24,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:47:24,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:24,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:24,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:24,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:24,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:24,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 22:47:24,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:47:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:47:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:47:24,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823074017] [2020-10-26 22:47:24,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:24,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:24,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903160907] [2020-10-26 22:47:24,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:24,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:24,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:24,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:24,606 INFO L87 Difference]: Start difference. First operand 5562 states and 7185 transitions. Second operand 7 states. [2020-10-26 22:47:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:27,927 INFO L93 Difference]: Finished difference Result 12116 states and 15823 transitions. [2020-10-26 22:47:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:47:27,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-26 22:47:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:27,974 INFO L225 Difference]: With dead ends: 12116 [2020-10-26 22:47:27,974 INFO L226 Difference]: Without dead ends: 6938 [2020-10-26 22:47:27,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:47:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6938 states. [2020-10-26 22:47:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6938 to 6922. [2020-10-26 22:47:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6922 states. [2020-10-26 22:47:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6922 states to 6922 states and 8823 transitions. [2020-10-26 22:47:28,183 INFO L78 Accepts]: Start accepts. Automaton has 6922 states and 8823 transitions. Word has length 293 [2020-10-26 22:47:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:28,184 INFO L481 AbstractCegarLoop]: Abstraction has 6922 states and 8823 transitions. [2020-10-26 22:47:28,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 6922 states and 8823 transitions. [2020-10-26 22:47:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-26 22:47:28,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:28,201 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:28,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:47:28,201 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:28,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1354849181, now seen corresponding path program 1 times [2020-10-26 22:47:28,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:28,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518497123] [2020-10-26 22:47:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:28,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:29,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-26 22:47:29,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-26 22:47:29,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-26 22:47:29,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:47:29,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:29,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:29,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:29,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 22:47:29,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:29,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 22:47:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:29,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 22:47:29,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-26 22:47:29,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-26 22:47:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:47:30,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518497123] [2020-10-26 22:47:30,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:47:30,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 22:47:30,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994356639] [2020-10-26 22:47:30,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:47:30,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:30,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:47:30,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:47:30,156 INFO L87 Difference]: Start difference. First operand 6922 states and 8823 transitions. Second operand 5 states. [2020-10-26 22:47:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:31,726 INFO L93 Difference]: Finished difference Result 11724 states and 15186 transitions. [2020-10-26 22:47:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:47:31,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-26 22:47:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:31,756 INFO L225 Difference]: With dead ends: 11724 [2020-10-26 22:47:31,756 INFO L226 Difference]: Without dead ends: 6922 [2020-10-26 22:47:31,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 22:47:31,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6922 states. [2020-10-26 22:47:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6922 to 6911. [2020-10-26 22:47:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6911 states. [2020-10-26 22:47:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6911 states to 6911 states and 8794 transitions. [2020-10-26 22:47:31,947 INFO L78 Accepts]: Start accepts. Automaton has 6911 states and 8794 transitions. Word has length 356 [2020-10-26 22:47:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:31,948 INFO L481 AbstractCegarLoop]: Abstraction has 6911 states and 8794 transitions. [2020-10-26 22:47:31,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:47:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6911 states and 8794 transitions. [2020-10-26 22:47:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-26 22:47:31,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:31,965 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:31,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:47:31,965 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:31,966 INFO L82 PathProgramCache]: Analyzing trace with hash -258200846, now seen corresponding path program 1 times [2020-10-26 22:47:31,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:31,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614933743] [2020-10-26 22:47:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:32,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:33,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-26 22:47:37,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 22:47:37,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 22:47:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 296 [2020-10-26 22:47:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:37,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:37,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:47:37,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:47:37,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 22:47:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:47:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:47:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:37,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:47:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 22:47:37,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:47:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:37,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:47:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:37,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-26 22:47:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:38,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:38,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:47:38,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:38,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-26 22:47:38,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:38,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:38,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:38,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:47:38,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 263 proven. 145 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 22:47:38,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614933743] [2020-10-26 22:47:38,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:38,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:47:38,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209826413] [2020-10-26 22:47:38,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:47:38,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:38,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:47:38,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:47:38,509 INFO L87 Difference]: Start difference. First operand 6911 states and 8794 transitions. Second operand 11 states. [2020-10-26 22:47:38,700 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-26 22:47:40,692 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-26 22:47:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:44,237 INFO L93 Difference]: Finished difference Result 11937 states and 15448 transitions. [2020-10-26 22:47:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 22:47:44,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 359 [2020-10-26 22:47:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:44,265 INFO L225 Difference]: With dead ends: 11937 [2020-10-26 22:47:44,266 INFO L226 Difference]: Without dead ends: 6956 [2020-10-26 22:47:44,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-26 22:47:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2020-10-26 22:47:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 6913. [2020-10-26 22:47:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6913 states. [2020-10-26 22:47:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6913 states to 6913 states and 8788 transitions. [2020-10-26 22:47:44,471 INFO L78 Accepts]: Start accepts. Automaton has 6913 states and 8788 transitions. Word has length 359 [2020-10-26 22:47:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:44,471 INFO L481 AbstractCegarLoop]: Abstraction has 6913 states and 8788 transitions. [2020-10-26 22:47:44,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:47:44,472 INFO L276 IsEmpty]: Start isEmpty. Operand 6913 states and 8788 transitions. [2020-10-26 22:47:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-26 22:47:44,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:44,484 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:44,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:47:44,484 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:44,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1531449825, now seen corresponding path program 1 times [2020-10-26 22:47:44,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:44,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666962908] [2020-10-26 22:47:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:44,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:45,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-26 22:47:49,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:47:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 22:47:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:47:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:47:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:49,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:47:49,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:49,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:49,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:47:49,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:47:49,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:49,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:47:49,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:47:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:49,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:50,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:47:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:50,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-26 22:47:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:50,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:47:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 22:47:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:47:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:47:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:47:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 269 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-26 22:47:50,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666962908] [2020-10-26 22:47:50,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:50,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:47:50,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949453824] [2020-10-26 22:47:50,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:50,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:50,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:50,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:50,255 INFO L87 Difference]: Start difference. First operand 6913 states and 8788 transitions. Second operand 7 states. [2020-10-26 22:47:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:54,879 INFO L93 Difference]: Finished difference Result 14453 states and 18439 transitions. [2020-10-26 22:47:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:47:54,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-26 22:47:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:54,916 INFO L225 Difference]: With dead ends: 14453 [2020-10-26 22:47:54,916 INFO L226 Difference]: Without dead ends: 7924 [2020-10-26 22:47:54,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:47:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2020-10-26 22:47:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 7698. [2020-10-26 22:47:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7698 states. [2020-10-26 22:47:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7698 states to 7698 states and 9593 transitions. [2020-10-26 22:47:55,111 INFO L78 Accepts]: Start accepts. Automaton has 7698 states and 9593 transitions. Word has length 364 [2020-10-26 22:47:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:55,112 INFO L481 AbstractCegarLoop]: Abstraction has 7698 states and 9593 transitions. [2020-10-26 22:47:55,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7698 states and 9593 transitions. [2020-10-26 22:47:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-26 22:47:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:55,125 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:47:55,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:47:55,125 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash -21504071, now seen corresponding path program 1 times [2020-10-26 22:47:55,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:55,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539195729] [2020-10-26 22:47:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:00,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:00,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-26 22:48:00,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:48:00,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-26 22:48:00,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:00,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:00,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:48:00,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:48:00,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:00,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:00,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:00,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:00,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:00,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:48:00,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 22:48:00,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:00,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:48:00,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:48:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:00,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:48:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:00,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-26 22:48:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:00,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 285 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-26 22:48:01,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539195729] [2020-10-26 22:48:01,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:01,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:48:01,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734829615] [2020-10-26 22:48:01,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:48:01,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:01,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:48:01,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:48:01,164 INFO L87 Difference]: Start difference. First operand 7698 states and 9593 transitions. Second operand 7 states. [2020-10-26 22:48:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:04,624 INFO L93 Difference]: Finished difference Result 13665 states and 17170 transitions. [2020-10-26 22:48:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:48:04,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-26 22:48:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:04,691 INFO L225 Difference]: With dead ends: 13665 [2020-10-26 22:48:04,691 INFO L226 Difference]: Without dead ends: 8279 [2020-10-26 22:48:04,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:48:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8279 states. [2020-10-26 22:48:04,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8279 to 8264. [2020-10-26 22:48:04,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8264 states. [2020-10-26 22:48:04,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 10212 transitions. [2020-10-26 22:48:04,894 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 10212 transitions. Word has length 375 [2020-10-26 22:48:04,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:04,895 INFO L481 AbstractCegarLoop]: Abstraction has 8264 states and 10212 transitions. [2020-10-26 22:48:04,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:48:04,895 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 10212 transitions. [2020-10-26 22:48:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-26 22:48:04,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:04,909 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:48:04,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:48:04,910 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1413162819, now seen corresponding path program 1 times [2020-10-26 22:48:04,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:04,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421610618] [2020-10-26 22:48:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 396 [2020-10-26 22:48:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:48:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-26 22:48:06,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:48:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:48:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 22:48:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:06,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:06,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:06,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:06,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:06,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:48:06,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:06,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:06,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:06,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:06,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:06,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:48:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:06,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:06,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:48:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:06,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:48:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:07,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 22:48:07,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 300 proven. 59 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 22:48:07,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421610618] [2020-10-26 22:48:07,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:07,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:48:07,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506134631] [2020-10-26 22:48:07,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:48:07,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:07,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:48:07,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:48:07,245 INFO L87 Difference]: Start difference. First operand 8264 states and 10212 transitions. Second operand 6 states. [2020-10-26 22:48:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:10,431 INFO L93 Difference]: Finished difference Result 14100 states and 17846 transitions. [2020-10-26 22:48:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:48:10,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 380 [2020-10-26 22:48:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:10,462 INFO L225 Difference]: With dead ends: 14100 [2020-10-26 22:48:10,462 INFO L226 Difference]: Without dead ends: 8336 [2020-10-26 22:48:10,475 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 22:48:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8336 states. [2020-10-26 22:48:10,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8336 to 8262. [2020-10-26 22:48:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8262 states. [2020-10-26 22:48:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8262 states to 8262 states and 9833 transitions. [2020-10-26 22:48:10,664 INFO L78 Accepts]: Start accepts. Automaton has 8262 states and 9833 transitions. Word has length 380 [2020-10-26 22:48:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:10,665 INFO L481 AbstractCegarLoop]: Abstraction has 8262 states and 9833 transitions. [2020-10-26 22:48:10,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:48:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8262 states and 9833 transitions. [2020-10-26 22:48:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-26 22:48:10,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:10,679 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:48:10,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:48:10,679 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:10,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1294629585, now seen corresponding path program 1 times [2020-10-26 22:48:10,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:10,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646433998] [2020-10-26 22:48:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:12,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:12,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-26 22:48:12,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:12,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1238 [2020-10-26 22:48:12,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:12,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 22:48:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:48:12,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 22:48:12,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:48:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:12,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:12,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:48:12,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:12,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 22:48:12,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:12,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:48:12,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:12,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:48:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:12,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 22:48:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-26 22:48:12,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:48:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-26 22:48:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 182 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:48:12,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646433998] [2020-10-26 22:48:12,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:12,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:48:12,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162688294] [2020-10-26 22:48:12,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:48:12,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:12,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:48:12,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:48:12,871 INFO L87 Difference]: Start difference. First operand 8262 states and 9833 transitions. Second operand 8 states. [2020-10-26 22:48:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:17,189 INFO L93 Difference]: Finished difference Result 15264 states and 18884 transitions. [2020-10-26 22:48:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:48:17,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 380 [2020-10-26 22:48:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:17,221 INFO L225 Difference]: With dead ends: 15264 [2020-10-26 22:48:17,221 INFO L226 Difference]: Without dead ends: 9502 [2020-10-26 22:48:17,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:48:17,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9502 states. [2020-10-26 22:48:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9502 to 8656. [2020-10-26 22:48:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8656 states. [2020-10-26 22:48:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 10338 transitions. [2020-10-26 22:48:17,566 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 10338 transitions. Word has length 380 [2020-10-26 22:48:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:17,567 INFO L481 AbstractCegarLoop]: Abstraction has 8656 states and 10338 transitions. [2020-10-26 22:48:17,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:48:17,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 10338 transitions. [2020-10-26 22:48:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-26 22:48:17,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:17,585 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, 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, 1, 1, 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 22:48:17,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:48:17,586 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash -398468972, now seen corresponding path program 1 times [2020-10-26 22:48:17,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:17,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325547239] [2020-10-26 22:48:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-26 22:48:22,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:48:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 22:48:22,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:48:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:48:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 341 [2020-10-26 22:48:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:22,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:22,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:22,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:22,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:48:22,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:48:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:48:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:23,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:48:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:23,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 22:48:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:23,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:48:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:23,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:48:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 22:48:23,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:48:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:48:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 239 proven. 118 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-26 22:48:24,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325547239] [2020-10-26 22:48:24,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:24,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:48:24,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818139179] [2020-10-26 22:48:24,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:48:24,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:24,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:48:24,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:48:24,174 INFO L87 Difference]: Start difference. First operand 8656 states and 10338 transitions. Second operand 9 states. [2020-10-26 22:48:26,408 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:48:26,729 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-26 22:48:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:27,950 INFO L93 Difference]: Finished difference Result 14860 states and 17909 transitions. [2020-10-26 22:48:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:48:27,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 385 [2020-10-26 22:48:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:27,984 INFO L225 Difference]: With dead ends: 14860 [2020-10-26 22:48:27,984 INFO L226 Difference]: Without dead ends: 8666 [2020-10-26 22:48:27,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2020-10-26 22:48:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8666 states. [2020-10-26 22:48:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8666 to 8646. [2020-10-26 22:48:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8646 states. [2020-10-26 22:48:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 10311 transitions. [2020-10-26 22:48:28,184 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 10311 transitions. Word has length 385 [2020-10-26 22:48:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:28,185 INFO L481 AbstractCegarLoop]: Abstraction has 8646 states and 10311 transitions. [2020-10-26 22:48:28,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:48:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 10311 transitions. [2020-10-26 22:48:28,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-26 22:48:28,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:28,199 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, 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, 1, 1, 1, 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 22:48:28,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:48:28,199 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:28,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:28,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1489386542, now seen corresponding path program 1 times [2020-10-26 22:48:28,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:28,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254414258] [2020-10-26 22:48:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:32,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-26 22:48:32,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:48:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4536 [2020-10-26 22:48:32,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:48:32,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:48:32,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:32,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:32,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:32,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:32,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:48:32,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:33,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:33,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:33,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:48:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:48:33,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:33,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:48:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:48:33,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:33,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:48:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:33,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:48:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:48:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:48:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:48:33,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254414258] [2020-10-26 22:48:33,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:33,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:48:33,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836332097] [2020-10-26 22:48:33,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:48:33,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:33,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:48:33,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:48:33,816 INFO L87 Difference]: Start difference. First operand 8646 states and 10311 transitions. Second operand 7 states. [2020-10-26 22:48:37,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:37,677 INFO L93 Difference]: Finished difference Result 16164 states and 19557 transitions. [2020-10-26 22:48:37,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:48:37,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-26 22:48:37,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:37,702 INFO L225 Difference]: With dead ends: 16164 [2020-10-26 22:48:37,702 INFO L226 Difference]: Without dead ends: 10018 [2020-10-26 22:48:37,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:48:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10018 states. [2020-10-26 22:48:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10018 to 9994. [2020-10-26 22:48:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9994 states. [2020-10-26 22:48:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9994 states to 9994 states and 11840 transitions. [2020-10-26 22:48:37,917 INFO L78 Accepts]: Start accepts. Automaton has 9994 states and 11840 transitions. Word has length 386 [2020-10-26 22:48:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:37,917 INFO L481 AbstractCegarLoop]: Abstraction has 9994 states and 11840 transitions. [2020-10-26 22:48:37,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:48:37,917 INFO L276 IsEmpty]: Start isEmpty. Operand 9994 states and 11840 transitions. [2020-10-26 22:48:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-26 22:48:37,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:37,932 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:48:37,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:48:37,932 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:37,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1669368756, now seen corresponding path program 1 times [2020-10-26 22:48:37,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:37,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682974932] [2020-10-26 22:48:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:38,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4887 [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:48:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 406 [2020-10-26 22:48:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:43,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:43,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:48:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:43,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:48:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:43,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:43,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:48:43,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 22:48:43,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:48:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:48:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:43,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:48:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:48:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:43,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:43,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-26 22:48:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 14 proven. 364 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 22:48:44,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682974932] [2020-10-26 22:48:44,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:44,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:48:44,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309655769] [2020-10-26 22:48:44,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:48:44,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:44,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:48:44,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:48:44,061 INFO L87 Difference]: Start difference. First operand 9994 states and 11840 transitions. Second operand 9 states. [2020-10-26 22:48:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:50,351 INFO L93 Difference]: Finished difference Result 24553 states and 30199 transitions. [2020-10-26 22:48:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 22:48:50,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 399 [2020-10-26 22:48:50,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:50,405 INFO L225 Difference]: With dead ends: 24553 [2020-10-26 22:48:50,406 INFO L226 Difference]: Without dead ends: 16474 [2020-10-26 22:48:50,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-26 22:48:50,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16474 states. [2020-10-26 22:48:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16474 to 15182. [2020-10-26 22:48:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15182 states. [2020-10-26 22:48:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15182 states to 15182 states and 18173 transitions. [2020-10-26 22:48:50,843 INFO L78 Accepts]: Start accepts. Automaton has 15182 states and 18173 transitions. Word has length 399 [2020-10-26 22:48:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:50,843 INFO L481 AbstractCegarLoop]: Abstraction has 15182 states and 18173 transitions. [2020-10-26 22:48:50,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:48:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 15182 states and 18173 transitions. [2020-10-26 22:48:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-26 22:48:50,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:50,863 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:48:50,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:48:50,863 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:50,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1726538870, now seen corresponding path program 1 times [2020-10-26 22:48:50,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:50,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25473315] [2020-10-26 22:48:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:52,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:52,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-26 22:48:52,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-10-26 22:48:52,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-26 22:48:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 22:48:52,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:52,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:48:52,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:52,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:52,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:48:52,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:48:52,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:48:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:52,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:48:52,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:52,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:52,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:48:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:52,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:52,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-26 22:48:52,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 22:48:52,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-26 22:48:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-26 22:48:53,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25473315] [2020-10-26 22:48:53,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:53,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:48:53,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707468230] [2020-10-26 22:48:53,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:48:53,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:48:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:48:53,027 INFO L87 Difference]: Start difference. First operand 15182 states and 18173 transitions. Second operand 5 states. [2020-10-26 22:48:54,943 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:48:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:55,646 INFO L93 Difference]: Finished difference Result 27902 states and 33530 transitions. [2020-10-26 22:48:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:48:55,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 430 [2020-10-26 22:48:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:55,683 INFO L225 Difference]: With dead ends: 27902 [2020-10-26 22:48:55,683 INFO L226 Difference]: Without dead ends: 15208 [2020-10-26 22:48:55,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:48:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15208 states. [2020-10-26 22:48:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15208 to 15180. [2020-10-26 22:48:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15180 states. [2020-10-26 22:48:56,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15180 states to 15180 states and 18150 transitions. [2020-10-26 22:48:56,035 INFO L78 Accepts]: Start accepts. Automaton has 15180 states and 18150 transitions. Word has length 430 [2020-10-26 22:48:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:56,036 INFO L481 AbstractCegarLoop]: Abstraction has 15180 states and 18150 transitions. [2020-10-26 22:48:56,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:48:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 15180 states and 18150 transitions. [2020-10-26 22:48:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-26 22:48:56,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:56,053 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 22:48:56,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:48:56,054 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:56,054 INFO L82 PathProgramCache]: Analyzing trace with hash 506578102, now seen corresponding path program 1 times [2020-10-26 22:48:56,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:56,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331022135] [2020-10-26 22:48:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:56,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:58,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:58,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-26 22:48:58,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:48:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2796 [2020-10-26 22:48:58,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-26 22:48:58,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:48:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:59,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:59,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:59,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:59,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:59,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-26 22:48:59,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-26 22:48:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:59,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:59,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 22:48:59,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 22:48:59,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 22:48:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:59,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-26 22:48:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:59,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:48:59,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-26 22:49:00,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331022135] [2020-10-26 22:49:00,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:00,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:49:00,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761941894] [2020-10-26 22:49:00,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:49:00,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:00,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:49:00,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:00,044 INFO L87 Difference]: Start difference. First operand 15180 states and 18150 transitions. Second operand 7 states. [2020-10-26 22:49:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:04,100 INFO L93 Difference]: Finished difference Result 29232 states and 35062 transitions. [2020-10-26 22:49:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:49:04,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-10-26 22:49:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:04,133 INFO L225 Difference]: With dead ends: 29232 [2020-10-26 22:49:04,133 INFO L226 Difference]: Without dead ends: 16552 [2020-10-26 22:49:04,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:49:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16552 states. [2020-10-26 22:49:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16552 to 15376. [2020-10-26 22:49:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15376 states. [2020-10-26 22:49:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15376 states to 15376 states and 18374 transitions. [2020-10-26 22:49:04,616 INFO L78 Accepts]: Start accepts. Automaton has 15376 states and 18374 transitions. Word has length 465 [2020-10-26 22:49:04,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:04,617 INFO L481 AbstractCegarLoop]: Abstraction has 15376 states and 18374 transitions. [2020-10-26 22:49:04,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:49:04,617 INFO L276 IsEmpty]: Start isEmpty. Operand 15376 states and 18374 transitions. [2020-10-26 22:49:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-26 22:49:04,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:04,632 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:49:04,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:49:04,632 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:04,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:04,633 INFO L82 PathProgramCache]: Analyzing trace with hash -179986874, now seen corresponding path program 1 times [2020-10-26 22:49:04,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:04,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394023874] [2020-10-26 22:49:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:49:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-26 22:49:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:09,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:09,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:09,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:49:09,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:09,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:49:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 22:49:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:49:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:10,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:49:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:49:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:49:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:10,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:10,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:49:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:10,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-26 22:49:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:10,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 249 proven. 408 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-26 22:49:11,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394023874] [2020-10-26 22:49:11,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:11,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:49:11,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948190666] [2020-10-26 22:49:11,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:49:11,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:11,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:49:11,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:49:11,005 INFO L87 Difference]: Start difference. First operand 15376 states and 18374 transitions. Second operand 10 states. [2020-10-26 22:49:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:19,172 INFO L93 Difference]: Finished difference Result 34750 states and 42093 transitions. [2020-10-26 22:49:19,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 22:49:19,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 488 [2020-10-26 22:49:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:19,230 INFO L225 Difference]: With dead ends: 34750 [2020-10-26 22:49:19,230 INFO L226 Difference]: Without dead ends: 21874 [2020-10-26 22:49:19,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:49:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21874 states. [2020-10-26 22:49:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21874 to 20010. [2020-10-26 22:49:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20010 states. [2020-10-26 22:49:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20010 states to 20010 states and 23782 transitions. [2020-10-26 22:49:19,631 INFO L78 Accepts]: Start accepts. Automaton has 20010 states and 23782 transitions. Word has length 488 [2020-10-26 22:49:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:19,632 INFO L481 AbstractCegarLoop]: Abstraction has 20010 states and 23782 transitions. [2020-10-26 22:49:19,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:49:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 20010 states and 23782 transitions. [2020-10-26 22:49:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-26 22:49:19,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:19,650 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:49:19,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:49:19,650 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:19,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:19,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1966542966, now seen corresponding path program 1 times [2020-10-26 22:49:19,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:19,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007350948] [2020-10-26 22:49:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:21,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:22,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:23,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3859 [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 431 [2020-10-26 22:49:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:23,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:23,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:49:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 22:49:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:49:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:49:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:23,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:24,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 22:49:24,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:24,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:49:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:24,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-26 22:49:24,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007350948] [2020-10-26 22:49:24,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:49:24,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 22:49:24,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107264169] [2020-10-26 22:49:24,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:49:24,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:24,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:49:24,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:49:24,579 INFO L87 Difference]: Start difference. First operand 20010 states and 23782 transitions. Second operand 5 states. [2020-10-26 22:49:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:26,532 INFO L93 Difference]: Finished difference Result 38898 states and 46228 transitions. [2020-10-26 22:49:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:49:26,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 488 [2020-10-26 22:49:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:26,582 INFO L225 Difference]: With dead ends: 38898 [2020-10-26 22:49:26,583 INFO L226 Difference]: Without dead ends: 19272 [2020-10-26 22:49:26,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 22:49:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19272 states. [2020-10-26 22:49:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19272 to 19224. [2020-10-26 22:49:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19224 states. [2020-10-26 22:49:27,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19224 states to 19224 states and 22782 transitions. [2020-10-26 22:49:27,003 INFO L78 Accepts]: Start accepts. Automaton has 19224 states and 22782 transitions. Word has length 488 [2020-10-26 22:49:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:27,003 INFO L481 AbstractCegarLoop]: Abstraction has 19224 states and 22782 transitions. [2020-10-26 22:49:27,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:49:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 19224 states and 22782 transitions. [2020-10-26 22:49:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-26 22:49:27,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:27,020 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:49:27,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:49:27,020 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:27,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:27,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1990862307, now seen corresponding path program 1 times [2020-10-26 22:49:27,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:27,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326976469] [2020-10-26 22:49:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:27,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:30,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-26 22:49:30,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:49:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3293 [2020-10-26 22:49:30,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:49:30,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-26 22:49:30,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:30,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:30,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:30,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:30,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:49:30,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:30,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 22:49:30,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:30,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:30,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:30,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:30,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:30,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:49:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:30,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:30,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:49:30,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 22:49:30,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:49:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:49:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:31,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:31,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-26 22:49:31,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 22:49:31,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:49:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 22:49:31,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326976469] [2020-10-26 22:49:31,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:31,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:49:31,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796576152] [2020-10-26 22:49:31,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:49:31,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:31,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:49:31,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:31,251 INFO L87 Difference]: Start difference. First operand 19224 states and 22782 transitions. Second operand 7 states. [2020-10-26 22:49:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:36,257 INFO L93 Difference]: Finished difference Result 40027 states and 47414 transitions. [2020-10-26 22:49:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:49:36,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 488 [2020-10-26 22:49:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:36,303 INFO L225 Difference]: With dead ends: 40027 [2020-10-26 22:49:36,303 INFO L226 Difference]: Without dead ends: 21187 [2020-10-26 22:49:36,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:49:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21187 states. [2020-10-26 22:49:36,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21187 to 20940. [2020-10-26 22:49:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20940 states. [2020-10-26 22:49:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20940 states to 20940 states and 24620 transitions. [2020-10-26 22:49:36,727 INFO L78 Accepts]: Start accepts. Automaton has 20940 states and 24620 transitions. Word has length 488 [2020-10-26 22:49:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:36,727 INFO L481 AbstractCegarLoop]: Abstraction has 20940 states and 24620 transitions. [2020-10-26 22:49:36,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:49:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 20940 states and 24620 transitions. [2020-10-26 22:49:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-26 22:49:36,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:36,751 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, 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, 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 22:49:36,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:49:36,751 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:36,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1400356055, now seen corresponding path program 1 times [2020-10-26 22:49:36,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:36,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772461512] [2020-10-26 22:49:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:37,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:41,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:41,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-26 22:49:41,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:49:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 22:49:41,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:49:41,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 22:49:41,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:42,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:42,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:49:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:42,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:42,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:49:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:42,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:49:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 22:49:42,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:49:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:42,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:49:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:42,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 22:49:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-26 22:49:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:49:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:49:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 22:49:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:42,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 453 proven. 72 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-26 22:49:42,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772461512] [2020-10-26 22:49:42,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:42,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:49:42,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654063200] [2020-10-26 22:49:42,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:49:42,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:42,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:49:42,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:42,685 INFO L87 Difference]: Start difference. First operand 20940 states and 24620 transitions. Second operand 7 states.