/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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:43:15,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:43:15,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:43:15,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:43:15,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:43:15,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:43:15,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:43:15,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:43:15,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:43:15,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:43:15,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:43:15,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:43:15,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:43:15,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:43:15,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:43:15,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:43:15,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:43:15,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:43:15,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:43:15,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:43:15,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:43:15,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:43:15,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:43:15,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:43:15,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:43:15,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:43:15,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:43:15,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:43:15,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:43:15,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:43:15,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:43:15,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:43:15,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:43:15,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:43:15,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:43:15,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:43:15,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:43:15,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:43:15,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:43:15,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:43:15,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:43:15,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:43:15,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:43:15,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:43:15,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:43:15,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:43:15,711 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:43:15,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:43:15,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:43:15,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:43:15,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:43:15,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:43:15,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:43:15,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:43:15,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:43:15,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:43:15,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:43:15,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:43:15,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:43:15,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:43:15,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:43:15,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:43:15,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:43:15,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:43:15,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:43:15,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:43:15,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:43:15,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:43:15,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:43:15,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:43:15,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:43:15,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:43:16,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:43:16,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:43:16,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:43:16,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:43:16,185 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:43:16,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-26 22:43:16,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25ece2ff/0ad3f5b933da4712911365a86751ed11/FLAG245918593 [2020-10-26 22:43:17,096 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:43:17,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-26 22:43:17,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25ece2ff/0ad3f5b933da4712911365a86751ed11/FLAG245918593 [2020-10-26 22:43:17,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25ece2ff/0ad3f5b933da4712911365a86751ed11 [2020-10-26 22:43:17,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:43:17,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:43:17,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:43:17,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:43:17,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:43:17,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:43:17" (1/1) ... [2020-10-26 22:43:17,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fd514a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:17, skipping insertion in model container [2020-10-26 22:43:17,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:43:17" (1/1) ... [2020-10-26 22:43:17,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:43:17,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:43:18,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:43:18,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:43:18,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:43:18,296 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:43:18,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18 WrapperNode [2020-10-26 22:43:18,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:43:18,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:43:18,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:43:18,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:43:18,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... [2020-10-26 22:43:18,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... [2020-10-26 22:43:18,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... [2020-10-26 22:43:18,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... [2020-10-26 22:43:18,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... [2020-10-26 22:43:18,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... [2020-10-26 22:43:18,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... [2020-10-26 22:43:18,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:43:18,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:43:18,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:43:18,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:43:18,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:43:18,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:43:18,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:43:18,616 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:43:18,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:43:18,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:43:18,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:43:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:43:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:43:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:43:18,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:43:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:43:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:43:18,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:43:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:43:18,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:43:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:43:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:43:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:43:18,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:43:21,204 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:43:21,204 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:43:21,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:43:21 BoogieIcfgContainer [2020-10-26 22:43:21,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:43:21,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:43:21,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:43:21,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:43:21,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:43:17" (1/3) ... [2020-10-26 22:43:21,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40baeeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:43:21, skipping insertion in model container [2020-10-26 22:43:21,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:43:18" (2/3) ... [2020-10-26 22:43:21,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40baeeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:43:21, skipping insertion in model container [2020-10-26 22:43:21,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:43:21" (3/3) ... [2020-10-26 22:43:21,216 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label45.c [2020-10-26 22:43:21,229 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:43:21,235 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:43:21,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:43:21,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:43:21,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:43:21,282 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:43:21,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:43:21,282 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:43:21,282 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:43:21,282 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:43:21,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:43:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:43:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 22:43:21,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:21,318 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] [2020-10-26 22:43:21,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:21,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:21,325 INFO L82 PathProgramCache]: Analyzing trace with hash -897718050, now seen corresponding path program 1 times [2020-10-26 22:43:21,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:21,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414433698] [2020-10-26 22:43:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:22,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:22,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-26 22:43:22,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:22,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-26 22:43:22,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:43:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:43:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 22:43:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:43:22,489 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:43:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:22,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:22,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:22,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:43:22,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:43:22,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:43:22,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414433698] [2020-10-26 22:43:22,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:43:22,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:43:22,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983360637] [2020-10-26 22:43:22,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:43:22,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:22,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:43:22,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:43:22,572 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:43:22,746 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 22:43:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:26,347 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-26 22:43:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:43:26,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-26 22:43:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:26,367 INFO L225 Difference]: With dead ends: 796 [2020-10-26 22:43:26,367 INFO L226 Difference]: Without dead ends: 435 [2020-10-26 22:43:26,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:43:26,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-26 22:43:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-26 22:43:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-26 22:43:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-26 22:43:26,468 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 39 [2020-10-26 22:43:26,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:26,468 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-26 22:43:26,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:43:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-26 22:43:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 22:43:26,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:26,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:43:26,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:43:26,479 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:26,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:26,482 INFO L82 PathProgramCache]: Analyzing trace with hash 448944579, now seen corresponding path program 1 times [2020-10-26 22:43:26,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:26,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494504114] [2020-10-26 22:43:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:27,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:28,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 22:43:28,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:43:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1919 [2020-10-26 22:43:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:43:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:43:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:43:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:43:28,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:28,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:28,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:28,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:43:28,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:28,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:43:28,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:28,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:43:28,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 22:43:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:43:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:43:29,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494504114] [2020-10-26 22:43:29,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:43:29,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 22:43:29,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811217524] [2020-10-26 22:43:29,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:43:29,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:43:29,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:43:29,036 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 8 states. [2020-10-26 22:43:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:33,511 INFO L93 Difference]: Finished difference Result 1654 states and 2431 transitions. [2020-10-26 22:43:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:43:33,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-26 22:43:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:33,522 INFO L225 Difference]: With dead ends: 1654 [2020-10-26 22:43:33,522 INFO L226 Difference]: Without dead ends: 1229 [2020-10-26 22:43:33,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:43:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-26 22:43:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1205. [2020-10-26 22:43:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2020-10-26 22:43:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1683 transitions. [2020-10-26 22:43:33,611 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1683 transitions. Word has length 111 [2020-10-26 22:43:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:33,611 INFO L481 AbstractCegarLoop]: Abstraction has 1205 states and 1683 transitions. [2020-10-26 22:43:33,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:43:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1683 transitions. [2020-10-26 22:43:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-26 22:43:33,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:33,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:43:33,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:43:33,616 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash 46074433, now seen corresponding path program 1 times [2020-10-26 22:43:33,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:33,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975353224] [2020-10-26 22:43:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:35,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:35,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 22:43:35,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:43:35,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-26 22:43:35,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:43:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:43:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:43:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:35,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:35,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:35,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:35,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:43:35,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:43:35,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:35,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:35,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:35,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:43:35,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:43:35,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:35,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:43:35,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:43:35,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975353224] [2020-10-26 22:43:35,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:43:35,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:43:35,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096468227] [2020-10-26 22:43:35,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:43:35,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:35,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:43:35,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:43:35,803 INFO L87 Difference]: Start difference. First operand 1205 states and 1683 transitions. Second operand 7 states. [2020-10-26 22:43:37,965 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 22:43:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:39,247 INFO L93 Difference]: Finished difference Result 3027 states and 4200 transitions. [2020-10-26 22:43:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:43:39,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-26 22:43:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:39,259 INFO L225 Difference]: With dead ends: 3027 [2020-10-26 22:43:39,259 INFO L226 Difference]: Without dead ends: 1828 [2020-10-26 22:43:39,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:43:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-10-26 22:43:39,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1615. [2020-10-26 22:43:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-10-26 22:43:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2154 transitions. [2020-10-26 22:43:39,332 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2154 transitions. Word has length 112 [2020-10-26 22:43:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:39,333 INFO L481 AbstractCegarLoop]: Abstraction has 1615 states and 2154 transitions. [2020-10-26 22:43:39,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:43:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2154 transitions. [2020-10-26 22:43:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-26 22:43:39,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:39,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:43:39,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:43:39,339 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1210990262, now seen corresponding path program 1 times [2020-10-26 22:43:39,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:39,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037810588] [2020-10-26 22:43:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:39,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:39,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-26 22:43:39,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:39,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-26 22:43:39,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:39,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:39,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:43:39,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 22:43:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:39,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:39,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:39,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:39,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:43:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:43:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:40,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:43:40,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:43:40,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:40,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:43:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:43:40,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037810588] [2020-10-26 22:43:40,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:43:40,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:43:40,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509046716] [2020-10-26 22:43:40,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:43:40,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:40,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:43:40,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:43:40,231 INFO L87 Difference]: Start difference. First operand 1615 states and 2154 transitions. Second operand 6 states. [2020-10-26 22:43:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:44,258 INFO L93 Difference]: Finished difference Result 4411 states and 5926 transitions. [2020-10-26 22:43:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:43:44,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-26 22:43:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:44,283 INFO L225 Difference]: With dead ends: 4411 [2020-10-26 22:43:44,283 INFO L226 Difference]: Without dead ends: 2802 [2020-10-26 22:43:44,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:43:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2020-10-26 22:43:44,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2202. [2020-10-26 22:43:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2202 states. [2020-10-26 22:43:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2940 transitions. [2020-10-26 22:43:44,377 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2940 transitions. Word has length 170 [2020-10-26 22:43:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:44,378 INFO L481 AbstractCegarLoop]: Abstraction has 2202 states and 2940 transitions. [2020-10-26 22:43:44,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:43:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2940 transitions. [2020-10-26 22:43:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-26 22:43:44,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:44,384 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:43:44,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:43:44,385 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:44,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:44,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1097255046, now seen corresponding path program 1 times [2020-10-26 22:43:44,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:44,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744392909] [2020-10-26 22:43:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:46,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:46,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-26 22:43:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:43:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2049 [2020-10-26 22:43:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:43:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:43:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-26 22:43:46,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:46,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:46,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:46,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:43:46,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:43:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:47,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:47,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:43:47,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-26 22:43:47,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:43:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:43:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:47,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:47,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:43:47,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:47,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-26 22:43:47,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:43:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:43:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 87 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:43:47,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744392909] [2020-10-26 22:43:47,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:43:47,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:43:47,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104977020] [2020-10-26 22:43:47,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:43:47,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:47,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:43:47,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:43:47,964 INFO L87 Difference]: Start difference. First operand 2202 states and 2940 transitions. Second operand 9 states. [2020-10-26 22:43:49,048 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-26 22:43:51,572 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-26 22:43:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:53,071 INFO L93 Difference]: Finished difference Result 6630 states and 9203 transitions. [2020-10-26 22:43:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 22:43:53,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 249 [2020-10-26 22:43:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:53,104 INFO L225 Difference]: With dead ends: 6630 [2020-10-26 22:43:53,105 INFO L226 Difference]: Without dead ends: 4434 [2020-10-26 22:43:53,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-26 22:43:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2020-10-26 22:43:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 4374. [2020-10-26 22:43:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4374 states. [2020-10-26 22:43:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 5653 transitions. [2020-10-26 22:43:53,280 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 5653 transitions. Word has length 249 [2020-10-26 22:43:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:53,281 INFO L481 AbstractCegarLoop]: Abstraction has 4374 states and 5653 transitions. [2020-10-26 22:43:53,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:43:53,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 5653 transitions. [2020-10-26 22:43:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-26 22:43:53,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:53,290 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:43:53,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:43:53,291 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:53,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1798066313, now seen corresponding path program 1 times [2020-10-26 22:43:53,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:53,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494177959] [2020-10-26 22:43:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:58,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:58,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-26 22:43:58,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:43:58,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 22:43:58,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:43:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:43:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:43:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:58,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:58,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:58,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:43:58,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 22:43:58,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:58,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:43:58,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:58,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:43:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:58,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:58,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:43:58,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:58,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 22:43:58,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:43:58,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:58,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-26 22:43:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:59,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:59,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:43:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 22:43:59,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-26 22:43:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 168 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-26 22:43:59,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494177959] [2020-10-26 22:43:59,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:43:59,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:43:59,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265705773] [2020-10-26 22:43:59,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:43:59,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:59,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:43:59,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:43:59,270 INFO L87 Difference]: Start difference. First operand 4374 states and 5653 transitions. Second operand 7 states. [2020-10-26 22:44:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:02,451 INFO L93 Difference]: Finished difference Result 10728 states and 14335 transitions. [2020-10-26 22:44:02,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:44:02,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-26 22:44:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:02,488 INFO L225 Difference]: With dead ends: 10728 [2020-10-26 22:44:02,488 INFO L226 Difference]: Without dead ends: 6548 [2020-10-26 22:44:02,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:44:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2020-10-26 22:44:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6324. [2020-10-26 22:44:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6324 states. [2020-10-26 22:44:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8027 transitions. [2020-10-26 22:44:02,696 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8027 transitions. Word has length 300 [2020-10-26 22:44:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:02,696 INFO L481 AbstractCegarLoop]: Abstraction has 6324 states and 8027 transitions. [2020-10-26 22:44:02,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8027 transitions. [2020-10-26 22:44:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-26 22:44:02,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:02,710 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:02,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:44:02,713 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:02,713 INFO L82 PathProgramCache]: Analyzing trace with hash -856760587, now seen corresponding path program 1 times [2020-10-26 22:44:02,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:02,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329449029] [2020-10-26 22:44:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:05,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:07,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:07,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-26 22:44:07,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:44:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 22:44:07,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 22:44:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 22:44:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:07,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:08,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:08,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:44:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:08,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:08,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:08,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:08,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:08,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-26 22:44:08,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:08,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:44:08,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:08,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:08,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:08,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:44:08,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-26 22:44:08,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:44:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:44:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:08,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:08,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:44:08,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 22:44:08,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:08,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:44:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 22:44:08,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329449029] [2020-10-26 22:44:08,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:08,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:44:08,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019324886] [2020-10-26 22:44:08,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:08,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:08,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:08,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:08,988 INFO L87 Difference]: Start difference. First operand 6324 states and 8027 transitions. Second operand 7 states. [2020-10-26 22:44:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:12,824 INFO L93 Difference]: Finished difference Result 12530 states and 16944 transitions. [2020-10-26 22:44:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:44:12,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-26 22:44:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:12,878 INFO L225 Difference]: With dead ends: 12530 [2020-10-26 22:44:12,878 INFO L226 Difference]: Without dead ends: 7751 [2020-10-26 22:44:12,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2020-10-26 22:44:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 7479. [2020-10-26 22:44:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7479 states. [2020-10-26 22:44:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 9481 transitions. [2020-10-26 22:44:13,141 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 9481 transitions. Word has length 310 [2020-10-26 22:44:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:13,142 INFO L481 AbstractCegarLoop]: Abstraction has 7479 states and 9481 transitions. [2020-10-26 22:44:13,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 9481 transitions. [2020-10-26 22:44:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-26 22:44:13,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:13,155 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:13,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:44:13,156 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:13,156 INFO L82 PathProgramCache]: Analyzing trace with hash 303316441, now seen corresponding path program 1 times [2020-10-26 22:44:13,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:13,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081866428] [2020-10-26 22:44:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:13,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:15,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:15,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-26 22:44:15,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:44:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2584 [2020-10-26 22:44:15,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:44:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:44:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:15,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:15,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:44:15,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:15,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:15,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:16,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:16,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:16,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:16,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 22:44:16,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:16,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:16,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:16,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:16,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:16,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:16,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:44:16,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:16,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 22:44:16,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:44:16,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:44:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:16,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:16,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:44:16,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:16,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 22:44:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:16,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:44:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 22:44:16,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081866428] [2020-10-26 22:44:16,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:16,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:16,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033977499] [2020-10-26 22:44:16,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:16,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:16,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:16,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:16,501 INFO L87 Difference]: Start difference. First operand 7479 states and 9481 transitions. Second operand 7 states. [2020-10-26 22:44:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:20,714 INFO L93 Difference]: Finished difference Result 16182 states and 20756 transitions. [2020-10-26 22:44:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:20,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-26 22:44:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:20,756 INFO L225 Difference]: With dead ends: 16182 [2020-10-26 22:44:20,756 INFO L226 Difference]: Without dead ends: 9087 [2020-10-26 22:44:20,776 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 22:44:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9087 states. [2020-10-26 22:44:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9087 to 8277. [2020-10-26 22:44:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8277 states. [2020-10-26 22:44:21,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 10436 transitions. [2020-10-26 22:44:21,030 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 10436 transitions. Word has length 328 [2020-10-26 22:44:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:21,031 INFO L481 AbstractCegarLoop]: Abstraction has 8277 states and 10436 transitions. [2020-10-26 22:44:21,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 10436 transitions. [2020-10-26 22:44:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-26 22:44:21,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:21,046 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:21,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:44:21,046 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:21,047 INFO L82 PathProgramCache]: Analyzing trace with hash -138019309, now seen corresponding path program 1 times [2020-10-26 22:44:21,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:21,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731492181] [2020-10-26 22:44:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:26,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-26 22:44:26,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:44:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-26 22:44:26,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:26,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:44:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:44:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-26 22:44:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:26,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:26,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:44:26,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:26,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:44:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:26,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:26,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:44:26,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 22:44:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:44:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:44:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:26,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:44:26,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:26,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-26 22:44:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:26,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:26,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:44:26,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 22:44:26,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:44:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 248 proven. 79 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 22:44:27,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731492181] [2020-10-26 22:44:27,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:27,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:44:27,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965945728] [2020-10-26 22:44:27,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:44:27,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:27,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:44:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:44:27,232 INFO L87 Difference]: Start difference. First operand 8277 states and 10436 transitions. Second operand 11 states. [2020-10-26 22:44:27,428 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-26 22:44:29,129 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:44:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:31,796 INFO L93 Difference]: Finished difference Result 16261 states and 20795 transitions. [2020-10-26 22:44:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 22:44:31,797 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 332 [2020-10-26 22:44:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:31,835 INFO L225 Difference]: With dead ends: 16261 [2020-10-26 22:44:31,835 INFO L226 Difference]: Without dead ends: 8354 [2020-10-26 22:44:31,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-26 22:44:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8354 states. [2020-10-26 22:44:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8354 to 8315. [2020-10-26 22:44:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8315 states. [2020-10-26 22:44:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 10588 transitions. [2020-10-26 22:44:32,185 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 10588 transitions. Word has length 332 [2020-10-26 22:44:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:32,185 INFO L481 AbstractCegarLoop]: Abstraction has 8315 states and 10588 transitions. [2020-10-26 22:44:32,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:44:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 10588 transitions. [2020-10-26 22:44:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-26 22:44:32,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:32,202 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:32,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:44:32,202 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:32,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1537732279, now seen corresponding path program 1 times [2020-10-26 22:44:32,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:32,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129548720] [2020-10-26 22:44:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:33,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:33,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-26 22:44:33,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:44:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-26 22:44:33,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:44:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:44:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:33,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:33,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:33,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:33,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:44:33,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:33,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:33,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:33,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:33,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:33,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:33,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:33,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:44:33,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:44:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:33,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:44:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:33,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:33,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:44:33,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:44:33,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:44:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:33,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:44:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:33,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:33,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:33,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:44:33,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:33,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 22:44:33,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:44:33,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 22:44:34,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129548720] [2020-10-26 22:44:34,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:34,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:34,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121903764] [2020-10-26 22:44:34,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:34,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:34,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:34,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:34,033 INFO L87 Difference]: Start difference. First operand 8315 states and 10588 transitions. Second operand 7 states. [2020-10-26 22:44:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:37,625 INFO L93 Difference]: Finished difference Result 15066 states and 19302 transitions. [2020-10-26 22:44:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:44:37,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-26 22:44:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:37,660 INFO L225 Difference]: With dead ends: 15066 [2020-10-26 22:44:37,660 INFO L226 Difference]: Without dead ends: 8349 [2020-10-26 22:44:37,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:37,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2020-10-26 22:44:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 8297. [2020-10-26 22:44:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8297 states. [2020-10-26 22:44:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 10413 transitions. [2020-10-26 22:44:37,986 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 10413 transitions. Word has length 333 [2020-10-26 22:44:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:37,987 INFO L481 AbstractCegarLoop]: Abstraction has 8297 states and 10413 transitions. [2020-10-26 22:44:37,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:37,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 10413 transitions. [2020-10-26 22:44:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-26 22:44:38,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:38,005 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:38,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:44:38,005 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:38,006 INFO L82 PathProgramCache]: Analyzing trace with hash -20000905, now seen corresponding path program 1 times [2020-10-26 22:44:38,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:38,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115311700] [2020-10-26 22:44:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:41,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:41,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-26 22:44:41,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2913 [2020-10-26 22:44:41,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:44:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:44:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:41,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:41,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:41,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:44:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:41,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:41,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:41,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:44:41,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 22:44:41,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:41,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:44:41,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:41,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:44:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:41,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:41,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:44:41,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:41,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 22:44:41,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:41,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:41,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:44:41,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:41,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:44:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:41,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:44:41,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 22:44:41,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:44:41,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 168 proven. 73 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:44:41,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115311700] [2020-10-26 22:44:41,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:41,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:41,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331181738] [2020-10-26 22:44:41,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:41,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:41,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:41,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:41,793 INFO L87 Difference]: Start difference. First operand 8297 states and 10413 transitions. Second operand 7 states. [2020-10-26 22:44:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:45,275 INFO L93 Difference]: Finished difference Result 19304 states and 24534 transitions. [2020-10-26 22:44:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:44:45,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-26 22:44:45,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:45,315 INFO L225 Difference]: With dead ends: 19304 [2020-10-26 22:44:45,315 INFO L226 Difference]: Without dead ends: 11391 [2020-10-26 22:44:45,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11391 states. [2020-10-26 22:44:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11391 to 10417. [2020-10-26 22:44:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10417 states. [2020-10-26 22:44:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10417 states to 10417 states and 13086 transitions. [2020-10-26 22:44:45,624 INFO L78 Accepts]: Start accepts. Automaton has 10417 states and 13086 transitions. Word has length 333 [2020-10-26 22:44:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:45,625 INFO L481 AbstractCegarLoop]: Abstraction has 10417 states and 13086 transitions. [2020-10-26 22:44:45,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:45,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10417 states and 13086 transitions. [2020-10-26 22:44:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-26 22:44:45,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:45,642 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:45,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:44:45,642 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:45,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1070826530, now seen corresponding path program 1 times [2020-10-26 22:44:45,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:45,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284296680] [2020-10-26 22:44:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:45,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:48,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:48,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-26 22:44:48,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2615 [2020-10-26 22:44:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:44:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:44:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:48,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:48,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:48,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:48,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:44:48,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:48,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:48,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:48,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:44:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:44:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:48,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:48,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:44:48,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 22:44:48,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:44:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:44:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:48,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:48,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:44:48,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 22:44:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:44:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 163 proven. 68 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:44:48,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284296680] [2020-10-26 22:44:48,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:48,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:48,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003623037] [2020-10-26 22:44:48,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:48,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:48,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:48,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:48,981 INFO L87 Difference]: Start difference. First operand 10417 states and 13086 transitions. Second operand 7 states. [2020-10-26 22:44:52,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:44:52,747 INFO L93 Difference]: Finished difference Result 24202 states and 31738 transitions. [2020-10-26 22:44:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:44:52,748 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-26 22:44:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:44:52,801 INFO L225 Difference]: With dead ends: 24202 [2020-10-26 22:44:52,801 INFO L226 Difference]: Without dead ends: 14169 [2020-10-26 22:44:52,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:44:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14169 states. [2020-10-26 22:44:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14169 to 12909. [2020-10-26 22:44:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12909 states. [2020-10-26 22:44:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12909 states to 12909 states and 15998 transitions. [2020-10-26 22:44:53,218 INFO L78 Accepts]: Start accepts. Automaton has 12909 states and 15998 transitions. Word has length 333 [2020-10-26 22:44:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:44:53,219 INFO L481 AbstractCegarLoop]: Abstraction has 12909 states and 15998 transitions. [2020-10-26 22:44:53,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:44:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 12909 states and 15998 transitions. [2020-10-26 22:44:53,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-26 22:44:53,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:44:53,237 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:44:53,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:44:53,238 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:44:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:44:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1804271974, now seen corresponding path program 1 times [2020-10-26 22:44:53,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:44:53,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53775541] [2020-10-26 22:44:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:44:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:53,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:57,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3703 [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:44:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:44:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:44:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:44:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:44:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:57,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:57,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:44:57,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 22:44:57,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:44:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:44:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:44:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:57,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-26 22:44:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:44:57,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:44:57,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:44:57,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:44:57,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:44:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:44:57,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:44:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:44:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:44:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:44:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:44:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 167 proven. 72 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:44:57,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53775541] [2020-10-26 22:44:57,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:44:57,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:44:57,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119173634] [2020-10-26 22:44:57,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:44:57,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:44:57,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:44:57,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:44:57,631 INFO L87 Difference]: Start difference. First operand 12909 states and 15998 transitions. Second operand 7 states. [2020-10-26 22:45:02,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:02,072 INFO L93 Difference]: Finished difference Result 25582 states and 31855 transitions. [2020-10-26 22:45:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:45:02,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-26 22:45:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:02,123 INFO L225 Difference]: With dead ends: 25582 [2020-10-26 22:45:02,123 INFO L226 Difference]: Without dead ends: 15609 [2020-10-26 22:45:02,147 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 22:45:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15609 states. [2020-10-26 22:45:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15609 to 14640. [2020-10-26 22:45:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14640 states. [2020-10-26 22:45:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14640 states to 14640 states and 18000 transitions. [2020-10-26 22:45:02,502 INFO L78 Accepts]: Start accepts. Automaton has 14640 states and 18000 transitions. Word has length 337 [2020-10-26 22:45:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:02,503 INFO L481 AbstractCegarLoop]: Abstraction has 14640 states and 18000 transitions. [2020-10-26 22:45:02,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 14640 states and 18000 transitions. [2020-10-26 22:45:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-26 22:45:02,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:02,518 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:02,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:45:02,518 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:02,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:02,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1336200817, now seen corresponding path program 1 times [2020-10-26 22:45:02,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:02,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847068748] [2020-10-26 22:45:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:02,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 22:45:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:03,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:03,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:03,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:45:03,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:03,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:03,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:45:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:45:03,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 22:45:03,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:45:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:45:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:03,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:45:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:45:03,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:45:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:45:03,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847068748] [2020-10-26 22:45:03,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:03,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:45:03,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565876206] [2020-10-26 22:45:03,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:45:03,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:03,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:45:03,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:45:03,841 INFO L87 Difference]: Start difference. First operand 14640 states and 18000 transitions. Second operand 8 states. [2020-10-26 22:45:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:08,756 INFO L93 Difference]: Finished difference Result 26961 states and 33427 transitions. [2020-10-26 22:45:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:45:08,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 345 [2020-10-26 22:45:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:08,802 INFO L225 Difference]: With dead ends: 26961 [2020-10-26 22:45:08,803 INFO L226 Difference]: Without dead ends: 16815 [2020-10-26 22:45:08,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-26 22:45:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16815 states. [2020-10-26 22:45:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16815 to 16564. [2020-10-26 22:45:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16564 states. [2020-10-26 22:45:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16564 states to 16564 states and 20253 transitions. [2020-10-26 22:45:09,226 INFO L78 Accepts]: Start accepts. Automaton has 16564 states and 20253 transitions. Word has length 345 [2020-10-26 22:45:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:09,227 INFO L481 AbstractCegarLoop]: Abstraction has 16564 states and 20253 transitions. [2020-10-26 22:45:09,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:45:09,227 INFO L276 IsEmpty]: Start isEmpty. Operand 16564 states and 20253 transitions. [2020-10-26 22:45:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-26 22:45:09,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:09,238 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:45:09,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:45:09,238 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:09,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1359157001, now seen corresponding path program 1 times [2020-10-26 22:45:09,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:09,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519836522] [2020-10-26 22:45:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:11,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-26 22:45:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:11,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:11,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:11,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:11,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:11,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:45:11,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:45:11,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:11,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:45:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:11,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:11,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:45:11,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 22:45:11,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:11,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:45:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 22:45:11,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:45:12,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519836522] [2020-10-26 22:45:12,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:12,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:45:12,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862892968] [2020-10-26 22:45:12,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:45:12,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:12,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:45:12,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:45:12,210 INFO L87 Difference]: Start difference. First operand 16564 states and 20253 transitions. Second operand 11 states. [2020-10-26 22:45:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:19,486 INFO L93 Difference]: Finished difference Result 31416 states and 40435 transitions. [2020-10-26 22:45:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 22:45:19,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 345 [2020-10-26 22:45:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:19,604 INFO L225 Difference]: With dead ends: 31416 [2020-10-26 22:45:19,604 INFO L226 Difference]: Without dead ends: 31413 [2020-10-26 22:45:19,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2020-10-26 22:45:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31413 states. [2020-10-26 22:45:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31413 to 29091. [2020-10-26 22:45:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29091 states. [2020-10-26 22:45:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29091 states to 29091 states and 35934 transitions. [2020-10-26 22:45:20,592 INFO L78 Accepts]: Start accepts. Automaton has 29091 states and 35934 transitions. Word has length 345 [2020-10-26 22:45:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:20,593 INFO L481 AbstractCegarLoop]: Abstraction has 29091 states and 35934 transitions. [2020-10-26 22:45:20,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:45:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 29091 states and 35934 transitions. [2020-10-26 22:45:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-26 22:45:20,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:20,606 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:20,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:45:20,606 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:20,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1264722215, now seen corresponding path program 1 times [2020-10-26 22:45:20,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:20,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714427539] [2020-10-26 22:45:20,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:20,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2200 [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:45:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:23,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:23,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:23,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:23,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:23,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:45:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:45:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:45:23,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-26 22:45:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:23,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:23,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:45:23,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:45:23,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:23,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:45:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 168 proven. 73 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:45:23,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714427539] [2020-10-26 22:45:23,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:23,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:23,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641366835] [2020-10-26 22:45:23,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:23,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:23,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:23,752 INFO L87 Difference]: Start difference. First operand 29091 states and 35934 transitions. Second operand 7 states. [2020-10-26 22:45:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:27,662 INFO L93 Difference]: Finished difference Result 54938 states and 67636 transitions. [2020-10-26 22:45:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:45:27,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-26 22:45:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:27,760 INFO L225 Difference]: With dead ends: 54938 [2020-10-26 22:45:27,761 INFO L226 Difference]: Without dead ends: 32987 [2020-10-26 22:45:27,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:45:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32987 states. [2020-10-26 22:45:28,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32987 to 31395. [2020-10-26 22:45:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31395 states. [2020-10-26 22:45:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31395 states to 31395 states and 38431 transitions. [2020-10-26 22:45:28,534 INFO L78 Accepts]: Start accepts. Automaton has 31395 states and 38431 transitions. Word has length 354 [2020-10-26 22:45:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:28,535 INFO L481 AbstractCegarLoop]: Abstraction has 31395 states and 38431 transitions. [2020-10-26 22:45:28,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:28,535 INFO L276 IsEmpty]: Start isEmpty. Operand 31395 states and 38431 transitions. [2020-10-26 22:45:28,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-26 22:45:28,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:28,546 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:28,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:45:28,546 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:28,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1665816619, now seen corresponding path program 1 times [2020-10-26 22:45:28,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:28,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5781017] [2020-10-26 22:45:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:30,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-26 22:45:30,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-26 22:45:30,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:45:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 22:45:30,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:30,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:30,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:30,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:30,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:45:30,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:30,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:30,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:45:30,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 22:45:30,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:30,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:45:30,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:45:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:30,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:30,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:45:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:45:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:30,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:30,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:45:30,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:45:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 22:45:30,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:45:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 22:45:30,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5781017] [2020-10-26 22:45:30,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:30,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:30,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812582602] [2020-10-26 22:45:30,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:30,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:30,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:30,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:30,728 INFO L87 Difference]: Start difference. First operand 31395 states and 38431 transitions. Second operand 7 states. [2020-10-26 22:45:31,508 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 22:45:32,768 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-26 22:45:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:37,248 INFO L93 Difference]: Finished difference Result 54886 states and 67167 transitions. [2020-10-26 22:45:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:45:37,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 360 [2020-10-26 22:45:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:37,343 INFO L225 Difference]: With dead ends: 54886 [2020-10-26 22:45:37,344 INFO L226 Difference]: Without dead ends: 31455 [2020-10-26 22:45:37,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:45:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31455 states. [2020-10-26 22:45:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31455 to 31393. [2020-10-26 22:45:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31393 states. [2020-10-26 22:45:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31393 states to 31393 states and 38327 transitions. [2020-10-26 22:45:38,072 INFO L78 Accepts]: Start accepts. Automaton has 31393 states and 38327 transitions. Word has length 360 [2020-10-26 22:45:38,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:38,073 INFO L481 AbstractCegarLoop]: Abstraction has 31393 states and 38327 transitions. [2020-10-26 22:45:38,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:45:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 31393 states and 38327 transitions. [2020-10-26 22:45:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-26 22:45:38,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:38,088 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:45:38,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:45:38,089 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1311766321, now seen corresponding path program 1 times [2020-10-26 22:45:38,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:38,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195241415] [2020-10-26 22:45:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:38,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:43,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:43,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-26 22:45:43,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:45:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4847 [2020-10-26 22:45:43,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:45:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:45:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 358 [2020-10-26 22:45:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:43,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:43,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:43,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:43,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:45:43,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:43,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 22:45:43,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:43,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:45:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:43,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:45:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:45:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:43,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:45:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:43,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:43,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-26 22:45:43,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 22:45:43,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-26 22:45:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 174 proven. 211 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 22:45:44,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195241415] [2020-10-26 22:45:44,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:44,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:45:44,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929482561] [2020-10-26 22:45:44,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:45:44,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:44,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:45:44,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:45:44,190 INFO L87 Difference]: Start difference. First operand 31393 states and 38327 transitions. Second operand 11 states. [2020-10-26 22:45:44,419 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-26 22:45:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:51,149 INFO L93 Difference]: Finished difference Result 60706 states and 78809 transitions. [2020-10-26 22:45:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 22:45:51,150 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 387 [2020-10-26 22:45:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:51,237 INFO L225 Difference]: With dead ends: 60706 [2020-10-26 22:45:51,237 INFO L226 Difference]: Without dead ends: 37297 [2020-10-26 22:45:51,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-26 22:45:51,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37297 states. [2020-10-26 22:45:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37297 to 36418. [2020-10-26 22:45:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36418 states. [2020-10-26 22:45:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36418 states to 36418 states and 44629 transitions. [2020-10-26 22:45:52,093 INFO L78 Accepts]: Start accepts. Automaton has 36418 states and 44629 transitions. Word has length 387 [2020-10-26 22:45:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:45:52,094 INFO L481 AbstractCegarLoop]: Abstraction has 36418 states and 44629 transitions. [2020-10-26 22:45:52,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:45:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 36418 states and 44629 transitions. [2020-10-26 22:45:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-26 22:45:52,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:45:52,111 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:45:52,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:45:52,112 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:45:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:45:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash -501243792, now seen corresponding path program 1 times [2020-10-26 22:45:52,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:45:52,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838828940] [2020-10-26 22:45:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:45:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2495 [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:45:54,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:54,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:45:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:54,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:54,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:45:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:54,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:45:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:54,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 22:45:54,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-26 22:45:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:55,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:55,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:45:55,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 22:45:55,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:45:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:45:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:45:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:55,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-26 22:45:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:45:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:45:55,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:45:55,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:45:55,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:45:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 22:45:55,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:45:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:45:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:45:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:45:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:45:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 279 proven. 73 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-26 22:45:55,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838828940] [2020-10-26 22:45:55,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:45:55,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:45:55,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573629168] [2020-10-26 22:45:55,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:45:55,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:45:55,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:45:55,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:45:55,403 INFO L87 Difference]: Start difference. First operand 36418 states and 44629 transitions. Second operand 7 states. [2020-10-26 22:45:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:45:59,686 INFO L93 Difference]: Finished difference Result 64994 states and 79378 transitions. [2020-10-26 22:45:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 22:45:59,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-26 22:45:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:45:59,774 INFO L225 Difference]: With dead ends: 64994 [2020-10-26 22:45:59,774 INFO L226 Difference]: Without dead ends: 38798 [2020-10-26 22:45:59,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:45:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38798 states. [2020-10-26 22:46:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38798 to 37554. [2020-10-26 22:46:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37554 states. [2020-10-26 22:46:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37554 states to 37554 states and 45819 transitions. [2020-10-26 22:46:00,527 INFO L78 Accepts]: Start accepts. Automaton has 37554 states and 45819 transitions. Word has length 412 [2020-10-26 22:46:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:00,527 INFO L481 AbstractCegarLoop]: Abstraction has 37554 states and 45819 transitions. [2020-10-26 22:46:00,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:00,528 INFO L276 IsEmpty]: Start isEmpty. Operand 37554 states and 45819 transitions. [2020-10-26 22:46:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-10-26 22:46:00,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:00,548 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:46:00,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:46:00,548 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:00,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1034142625, now seen corresponding path program 1 times [2020-10-26 22:46:00,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:00,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540419034] [2020-10-26 22:46:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:01,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:03,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3363 [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 22:46:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:04,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:04,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:04,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:04,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:04,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:04,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:46:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-26 22:46:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:04,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 22:46:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 22:46:04,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540419034] [2020-10-26 22:46:04,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:04,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:04,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420059822] [2020-10-26 22:46:04,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:04,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:04,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:04,807 INFO L87 Difference]: Start difference. First operand 37554 states and 45819 transitions. Second operand 7 states. [2020-10-26 22:46:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:10,529 INFO L93 Difference]: Finished difference Result 68847 states and 83935 transitions. [2020-10-26 22:46:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:46:10,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 416 [2020-10-26 22:46:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:10,716 INFO L225 Difference]: With dead ends: 68847 [2020-10-26 22:46:10,716 INFO L226 Difference]: Without dead ends: 40616 [2020-10-26 22:46:10,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:46:10,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40616 states. [2020-10-26 22:46:11,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40616 to 37453. [2020-10-26 22:46:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37453 states. [2020-10-26 22:46:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37453 states to 37453 states and 44360 transitions. [2020-10-26 22:46:11,427 INFO L78 Accepts]: Start accepts. Automaton has 37453 states and 44360 transitions. Word has length 416 [2020-10-26 22:46:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:11,428 INFO L481 AbstractCegarLoop]: Abstraction has 37453 states and 44360 transitions. [2020-10-26 22:46:11,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 37453 states and 44360 transitions. [2020-10-26 22:46:11,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-26 22:46:11,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:11,440 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:11,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:46:11,441 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1929607288, now seen corresponding path program 1 times [2020-10-26 22:46:11,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:11,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940094136] [2020-10-26 22:46:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:12,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:12,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-26 22:46:12,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:12,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-26 22:46:12,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-26 22:46:12,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:46:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:12,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:12,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:12,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:12,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:46:12,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:46:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:12,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:12,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:12,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:46:12,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:12,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 22:46:12,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:12,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:12,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:12,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-26 22:46:12,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-26 22:46:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:46:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 22:46:13,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940094136] [2020-10-26 22:46:13,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:13,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:46:13,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638932829] [2020-10-26 22:46:13,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:46:13,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:46:13,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:46:13,350 INFO L87 Difference]: Start difference. First operand 37453 states and 44360 transitions. Second operand 7 states. [2020-10-26 22:46:15,630 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 22:46:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:17,617 INFO L93 Difference]: Finished difference Result 69364 states and 81509 transitions. [2020-10-26 22:46:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:46:17,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439 [2020-10-26 22:46:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:17,707 INFO L225 Difference]: With dead ends: 69364 [2020-10-26 22:46:17,707 INFO L226 Difference]: Without dead ends: 41169 [2020-10-26 22:46:17,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:46:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41169 states. [2020-10-26 22:46:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41169 to 38039. [2020-10-26 22:46:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38039 states. [2020-10-26 22:46:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38039 states to 38039 states and 44801 transitions. [2020-10-26 22:46:18,439 INFO L78 Accepts]: Start accepts. Automaton has 38039 states and 44801 transitions. Word has length 439 [2020-10-26 22:46:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:18,440 INFO L481 AbstractCegarLoop]: Abstraction has 38039 states and 44801 transitions. [2020-10-26 22:46:18,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:46:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 38039 states and 44801 transitions. [2020-10-26 22:46:18,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-26 22:46:18,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:18,454 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:46:18,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:46:18,454 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:18,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:18,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1475306057, now seen corresponding path program 1 times [2020-10-26 22:46:18,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:18,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655142509] [2020-10-26 22:46:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:19,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:20,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-26 22:46:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:20,638 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:46:20,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:20,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:20,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:20,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:20,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:46:20,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:20,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:46:20,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 22:46:20,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 22:46:20,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:46:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:46:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:21,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:21,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:21,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-26 22:46:21,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:21,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-26 22:46:21,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:21,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-26 22:46:21,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 305 proven. 32 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 22:46:21,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655142509] [2020-10-26 22:46:21,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:21,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:46:21,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510059029] [2020-10-26 22:46:21,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:46:21,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:21,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:46:21,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:46:21,524 INFO L87 Difference]: Start difference. First operand 38039 states and 44801 transitions. Second operand 6 states. [2020-10-26 22:46:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:25,301 INFO L93 Difference]: Finished difference Result 72868 states and 86447 transitions. [2020-10-26 22:46:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:46:25,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 446 [2020-10-26 22:46:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:25,395 INFO L225 Difference]: With dead ends: 72868 [2020-10-26 22:46:25,395 INFO L226 Difference]: Without dead ends: 38491 [2020-10-26 22:46:25,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:46:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38491 states. [2020-10-26 22:46:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38491 to 38389. [2020-10-26 22:46:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38389 states. [2020-10-26 22:46:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38389 states to 38389 states and 44674 transitions. [2020-10-26 22:46:25,971 INFO L78 Accepts]: Start accepts. Automaton has 38389 states and 44674 transitions. Word has length 446 [2020-10-26 22:46:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:25,972 INFO L481 AbstractCegarLoop]: Abstraction has 38389 states and 44674 transitions. [2020-10-26 22:46:25,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:46:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 38389 states and 44674 transitions. [2020-10-26 22:46:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-26 22:46:25,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:25,980 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 22:46:25,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:46:25,981 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:25,981 INFO L82 PathProgramCache]: Analyzing trace with hash 69188365, now seen corresponding path program 1 times [2020-10-26 22:46:25,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:25,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303349317] [2020-10-26 22:46:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:26,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-26 22:46:30,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4003 [2020-10-26 22:46:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 22:46:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:46:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 22:46:30,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:30,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:46:30,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:30,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:30,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:46:30,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 22:46:30,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:30,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:46:30,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:46:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:30,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-26 22:46:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-26 22:46:30,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:46:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 22:46:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:31,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-26 22:46:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:31,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:31,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:31,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:31,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:46:31,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:46:31,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-26 22:46:31,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:46:31,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 332 proven. 93 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:46:32,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303349317] [2020-10-26 22:46:32,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:32,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:46:32,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80448714] [2020-10-26 22:46:32,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:46:32,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:46:32,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:46:32,082 INFO L87 Difference]: Start difference. First operand 38389 states and 44674 transitions. Second operand 10 states. [2020-10-26 22:46:33,450 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-26 22:46:35,916 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 22:46:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:46:38,221 INFO L93 Difference]: Finished difference Result 73421 states and 85230 transitions. [2020-10-26 22:46:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 22:46:38,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 446 [2020-10-26 22:46:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:46:38,303 INFO L225 Difference]: With dead ends: 73421 [2020-10-26 22:46:38,304 INFO L226 Difference]: Without dead ends: 43679 [2020-10-26 22:46:38,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-10-26 22:46:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43679 states. [2020-10-26 22:46:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43679 to 42955. [2020-10-26 22:46:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42955 states. [2020-10-26 22:46:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42955 states to 42955 states and 49709 transitions. [2020-10-26 22:46:38,964 INFO L78 Accepts]: Start accepts. Automaton has 42955 states and 49709 transitions. Word has length 446 [2020-10-26 22:46:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:46:38,964 INFO L481 AbstractCegarLoop]: Abstraction has 42955 states and 49709 transitions. [2020-10-26 22:46:39,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:46:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 42955 states and 49709 transitions. [2020-10-26 22:46:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-26 22:46:39,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:46:39,198 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 22:46:39,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:46:39,198 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:46:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:46:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1613500096, now seen corresponding path program 1 times [2020-10-26 22:46:39,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:46:39,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839402378] [2020-10-26 22:46:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:46:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:39,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:41,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-26 22:46:41,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:46:41,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2366 [2020-10-26 22:46:41,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:46:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:46:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:41,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:46:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:41,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:46:41,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:46:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:46:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:41,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:41,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:46:41,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 22:46:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:46:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:46:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:46:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:46:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:42,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [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: 69 [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:46:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:42,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-26 22:46:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:46:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:46:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:46:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 279 proven. 73 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-10-26 22:46:42,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839402378] [2020-10-26 22:46:42,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:46:42,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:46:42,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487623937] [2020-10-26 22:46:42,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:46:42,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:46:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:46:42,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:46:42,516 INFO L87 Difference]: Start difference. First operand 42955 states and 49709 transitions. Second operand 8 states.