/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:44:45,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:44:45,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:44:45,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:44:45,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:44:45,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:44:45,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:44:45,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:44:45,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:44:45,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:44:45,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:44:45,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:44:45,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:44:45,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:44:45,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:44:45,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:44:45,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:44:45,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:44:45,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:44:45,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:44:45,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:44:45,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:44:45,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:44:45,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:44:45,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:44:45,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:44:45,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:44:45,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:44:45,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:44:45,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:44:45,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:44:45,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:44:45,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:44:45,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:44:45,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:44:45,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:44:45,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:44:45,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:44:45,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:44:45,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:44:45,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:44:45,518 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 [2020-10-27 18:44:45,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:44:45,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:44:45,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:44:45,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:44:45,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:44:45,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:44:45,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:44:45,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:44:45,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:44:45,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:44:45,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:44:45,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:44:45,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:44:45,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:44:45,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:44:45,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:44:45,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:44:45,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:44:45,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:44:45,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:44:45,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:44:45,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:44:45,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:44:45,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:44:45,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:44:45,577 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:44:45,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:44:45,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:44:45,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:44:45,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:44:45,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:44:46,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:44:46,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:44:46,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:44:46,017 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:44:46,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label47.c [2020-10-27 18:44:46,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648c358ed/3c6fb12175634e42bbf75df23b544bc4/FLAG5e9048e2b [2020-10-27 18:44:46,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:44:46,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label47.c [2020-10-27 18:44:46,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648c358ed/3c6fb12175634e42bbf75df23b544bc4/FLAG5e9048e2b [2020-10-27 18:44:47,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/648c358ed/3c6fb12175634e42bbf75df23b544bc4 [2020-10-27 18:44:47,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:44:47,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:44:47,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:44:47,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:44:47,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:44:47,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:47" (1/1) ... [2020-10-27 18:44:47,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d05f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:47, skipping insertion in model container [2020-10-27 18:44:47,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:47" (1/1) ... [2020-10-27 18:44:47,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:44:47,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:44:48,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:44:48,039 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:44:48,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:44:48,473 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:44:48,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48 WrapperNode [2020-10-27 18:44:48,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:44:48,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:44:48,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:44:48,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:44:48,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (1/1) ... [2020-10-27 18:44:48,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (1/1) ... [2020-10-27 18:44:48,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (1/1) ... [2020-10-27 18:44:48,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (1/1) ... [2020-10-27 18:44:48,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (1/1) ... [2020-10-27 18:44:48,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (1/1) ... [2020-10-27 18:44:48,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (1/1) ... [2020-10-27 18:44:48,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:44:48,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:44:48,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:44:48,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:44:48,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (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 [2020-10-27 18:44:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:44:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:44:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:44:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:44:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:44:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:44:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:44:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:44:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:44:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:44:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:44:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:44:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:44:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:44:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:44:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:44:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:44:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:44:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:44:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:44:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:44:51,266 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:44:51,266 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:44:51,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:51 BoogieIcfgContainer [2020-10-27 18:44:51,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:44:51,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:44:51,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:44:51,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:44:51,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:44:47" (1/3) ... [2020-10-27 18:44:51,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e8bab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:51, skipping insertion in model container [2020-10-27 18:44:51,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:48" (2/3) ... [2020-10-27 18:44:51,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e8bab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:51, skipping insertion in model container [2020-10-27 18:44:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:51" (3/3) ... [2020-10-27 18:44:51,280 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label47.c [2020-10-27 18:44:51,293 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:44:51,304 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:44:51,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:44:51,349 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:44:51,349 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:44:51,349 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:44:51,349 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:44:51,349 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:44:51,349 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:44:51,350 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:44:51,350 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:44:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:44:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 18:44:51,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:51,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:51,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:51,397 INFO L82 PathProgramCache]: Analyzing trace with hash 25208116, now seen corresponding path program 1 times [2020-10-27 18:44:51,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:51,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933470733] [2020-10-27 18:44:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:52,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:52,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:44:52,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-10-27 18:44:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:44:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:44:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:44:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:44:52,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:52,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:52,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:52,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:44:52,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:52,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:44:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:44:52,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933470733] [2020-10-27 18:44:52,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:44:52,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:44:52,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690671816] [2020-10-27 18:44:52,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:44:52,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:52,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:44:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:44:52,612 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 18:44:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:57,275 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-27 18:44:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:44:57,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-27 18:44:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:57,300 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 18:44:57,301 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:44:57,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:44:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:44:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 18:44:57,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 18:44:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-27 18:44:57,437 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 72 [2020-10-27 18:44:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:57,438 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-27 18:44:57,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:44:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-27 18:44:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 18:44:57,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:57,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:57,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:44:57,446 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:57,447 INFO L82 PathProgramCache]: Analyzing trace with hash -798612614, now seen corresponding path program 1 times [2020-10-27 18:44:57,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:57,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220743295] [2020-10-27 18:44:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:59,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 18:44:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:44:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-27 18:44:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 18:44:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:44:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:44:59,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:59,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:59,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:59,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:44:59,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:44:59,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:59,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:59,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:59,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 18:44:59,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:44:59,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:59,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:44:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:44:59,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220743295] [2020-10-27 18:44:59,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:59,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:44:59,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402384589] [2020-10-27 18:44:59,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:44:59,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:59,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:44:59,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:44:59,631 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 5 states. [2020-10-27 18:45:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:03,171 INFO L93 Difference]: Finished difference Result 1445 states and 2231 transitions. [2020-10-27 18:45:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:03,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 18:45:03,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:03,183 INFO L225 Difference]: With dead ends: 1445 [2020-10-27 18:45:03,184 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:45:03,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:45:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 18:45:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 18:45:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 958 transitions. [2020-10-27 18:45:03,231 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 958 transitions. Word has length 147 [2020-10-27 18:45:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:03,234 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 958 transitions. [2020-10-27 18:45:03,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 958 transitions. [2020-10-27 18:45:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 18:45:03,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:03,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:45:03,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:45:03,251 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1006781402, now seen corresponding path program 1 times [2020-10-27 18:45:03,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:03,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331118768] [2020-10-27 18:45:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:04,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:04,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 18:45:04,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:45:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-27 18:45:04,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 18:45:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:45:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:05,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:05,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:05,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:45:05,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:05,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:05,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 18:45:05,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:45:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:05,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 18:45:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:45:05,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331118768] [2020-10-27 18:45:05,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:05,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:45:05,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533953356] [2020-10-27 18:45:05,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:45:05,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:05,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:45:05,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:05,329 INFO L87 Difference]: Start difference. First operand 690 states and 958 transitions. Second operand 5 states. [2020-10-27 18:45:08,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:08,393 INFO L93 Difference]: Finished difference Result 1445 states and 1991 transitions. [2020-10-27 18:45:08,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:08,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 18:45:08,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:08,399 INFO L225 Difference]: With dead ends: 1445 [2020-10-27 18:45:08,400 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:45:08,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:45:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 18:45:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 18:45:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 921 transitions. [2020-10-27 18:45:08,436 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 921 transitions. Word has length 157 [2020-10-27 18:45:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:08,437 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 921 transitions. [2020-10-27 18:45:08,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 921 transitions. [2020-10-27 18:45:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 18:45:08,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:08,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:45:08,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:45:08,443 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:08,444 INFO L82 PathProgramCache]: Analyzing trace with hash -423084130, now seen corresponding path program 1 times [2020-10-27 18:45:08,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:08,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980916542] [2020-10-27 18:45:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:09,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:09,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:09,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 18:45:09,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:45:09,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-27 18:45:09,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:09,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:09,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 18:45:09,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:45:09,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:09,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:09,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:09,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:09,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:09,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:45:09,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:09,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:09,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:09,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:09,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 18:45:09,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 18:45:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:45:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:45:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980916542] [2020-10-27 18:45:09,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:09,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:45:09,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384477062] [2020-10-27 18:45:09,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:45:09,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:09,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:45:09,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:09,963 INFO L87 Difference]: Start difference. First operand 690 states and 921 transitions. Second operand 5 states. [2020-10-27 18:45:12,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:12,687 INFO L93 Difference]: Finished difference Result 1445 states and 1916 transitions. [2020-10-27 18:45:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:12,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-27 18:45:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:12,692 INFO L225 Difference]: With dead ends: 1445 [2020-10-27 18:45:12,693 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 18:45:12,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 18:45:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-27 18:45:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-27 18:45:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 854 transitions. [2020-10-27 18:45:12,722 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 854 transitions. Word has length 161 [2020-10-27 18:45:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:12,723 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 854 transitions. [2020-10-27 18:45:12,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 854 transitions. [2020-10-27 18:45:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-27 18:45:12,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:12,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:45:12,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:45:12,726 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:12,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:12,727 INFO L82 PathProgramCache]: Analyzing trace with hash -776633678, now seen corresponding path program 1 times [2020-10-27 18:45:12,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:12,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284907473] [2020-10-27 18:45:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:12,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:15,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-27 18:45:15,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:45:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-27 18:45:15,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 18:45:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:45:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:15,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:15,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:45:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:15,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:15,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:45:15,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 18:45:15,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:15,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:45:15,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:45:15,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284907473] [2020-10-27 18:45:15,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:15,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:45:15,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981549626] [2020-10-27 18:45:15,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:45:15,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:15,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:45:15,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:15,477 INFO L87 Difference]: Start difference. First operand 690 states and 854 transitions. Second operand 5 states. [2020-10-27 18:45:19,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:19,073 INFO L93 Difference]: Finished difference Result 1723 states and 2188 transitions. [2020-10-27 18:45:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:19,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-27 18:45:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:19,085 INFO L225 Difference]: With dead ends: 1723 [2020-10-27 18:45:19,086 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 18:45:19,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 18:45:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 18:45:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 18:45:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1231 transitions. [2020-10-27 18:45:19,130 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1231 transitions. Word has length 183 [2020-10-27 18:45:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:19,132 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1231 transitions. [2020-10-27 18:45:19,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1231 transitions. [2020-10-27 18:45:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-27 18:45:19,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:19,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:19,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:45:19,138 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash -540659858, now seen corresponding path program 1 times [2020-10-27 18:45:19,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:19,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486200499] [2020-10-27 18:45:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:19,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:24,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-27 18:45:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:45:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 18:45:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-27 18:45:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:45:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:24,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:24,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:24,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:45:24,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:24,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:24,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:24,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:45:24,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:45:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:24,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 18:45:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:24,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:24,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:24,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:45:24,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 18:45:24,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:45:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-27 18:45:24,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486200499] [2020-10-27 18:45:24,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:24,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:45:24,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985868991] [2020-10-27 18:45:24,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:45:24,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:24,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:45:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:45:24,814 INFO L87 Difference]: Start difference. First operand 1035 states and 1231 transitions. Second operand 5 states. [2020-10-27 18:45:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:28,059 INFO L93 Difference]: Finished difference Result 3094 states and 3723 transitions. [2020-10-27 18:45:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:28,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2020-10-27 18:45:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:28,073 INFO L225 Difference]: With dead ends: 3094 [2020-10-27 18:45:28,073 INFO L226 Difference]: Without dead ends: 2065 [2020-10-27 18:45:28,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:45:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2020-10-27 18:45:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2061. [2020-10-27 18:45:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-27 18:45:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2352 transitions. [2020-10-27 18:45:28,140 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2352 transitions. Word has length 293 [2020-10-27 18:45:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:28,141 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2352 transitions. [2020-10-27 18:45:28,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2352 transitions. [2020-10-27 18:45:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-27 18:45:28,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:28,153 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:28,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:45:28,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:28,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:28,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1328210096, now seen corresponding path program 1 times [2020-10-27 18:45:28,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:28,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786312352] [2020-10-27 18:45:28,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-27 18:45:33,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:45:33,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 18:45:33,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-27 18:45:33,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:45:33,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:33,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:33,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:33,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:45:33,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:33,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:45:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:45:33,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:45:33,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 18:45:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:33,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:45:33,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:45:33,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 18:45:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:45:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:45:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:45:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-27 18:45:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:33,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:45:33,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 18:45:33,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:45:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:45:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 473 proven. 2 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2020-10-27 18:45:34,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786312352] [2020-10-27 18:45:34,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:34,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:34,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802919922] [2020-10-27 18:45:34,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:34,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:34,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:34,253 INFO L87 Difference]: Start difference. First operand 2061 states and 2352 transitions. Second operand 7 states. [2020-10-27 18:45:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:38,847 INFO L93 Difference]: Finished difference Result 4848 states and 5676 transitions. [2020-10-27 18:45:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:45:38,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-27 18:45:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:38,869 INFO L225 Difference]: With dead ends: 4848 [2020-10-27 18:45:38,870 INFO L226 Difference]: Without dead ends: 2793 [2020-10-27 18:45:38,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:45:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2020-10-27 18:45:38,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2776. [2020-10-27 18:45:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2776 states. [2020-10-27 18:45:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 3179 transitions. [2020-10-27 18:45:38,974 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 3179 transitions. Word has length 448 [2020-10-27 18:45:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:38,975 INFO L481 AbstractCegarLoop]: Abstraction has 2776 states and 3179 transitions. [2020-10-27 18:45:38,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:45:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 3179 transitions. [2020-10-27 18:45:38,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-27 18:45:38,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:38,991 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:38,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:45:38,992 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:38,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:38,993 INFO L82 PathProgramCache]: Analyzing trace with hash -534587574, now seen corresponding path program 1 times [2020-10-27 18:45:38,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:38,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588126289] [2020-10-27 18:45:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:39,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:44,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:44,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-27 18:45:44,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:45:44,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 18:45:44,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 396 [2020-10-27 18:45:44,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:45:44,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:44,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:44,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:45:44,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:44,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:44,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:45:44,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:45:44,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 18:45:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:44,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:44,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:44,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 18:45:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:44,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:45:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-27 18:45:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:44,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:44,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 18:45:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 393 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-27 18:45:45,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588126289] [2020-10-27 18:45:45,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:45,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:45,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111664680] [2020-10-27 18:45:45,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:45,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:45,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:45,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:45,208 INFO L87 Difference]: Start difference. First operand 2776 states and 3179 transitions. Second operand 7 states. [2020-10-27 18:45:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:49,813 INFO L93 Difference]: Finished difference Result 6960 states and 8159 transitions. [2020-10-27 18:45:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:45:49,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 557 [2020-10-27 18:45:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:49,837 INFO L225 Difference]: With dead ends: 6960 [2020-10-27 18:45:49,837 INFO L226 Difference]: Without dead ends: 4190 [2020-10-27 18:45:49,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:45:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4190 states. [2020-10-27 18:45:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4190 to 4174. [2020-10-27 18:45:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4174 states. [2020-10-27 18:45:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 4708 transitions. [2020-10-27 18:45:49,966 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 4708 transitions. Word has length 557 [2020-10-27 18:45:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:49,968 INFO L481 AbstractCegarLoop]: Abstraction has 4174 states and 4708 transitions. [2020-10-27 18:45:49,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:45:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 4708 transitions. [2020-10-27 18:45:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2020-10-27 18:45:49,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:49,995 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:49,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:45:49,995 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:49,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1228337334, now seen corresponding path program 1 times [2020-10-27 18:45:49,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:49,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675123752] [2020-10-27 18:45:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:53,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:55,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 661 [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 469 [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 18:45:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:55,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:55,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:55,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:55,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:45:55,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:55,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:55,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:55,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:55,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:55,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:45:55,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:45:55,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:55,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 18:45:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:55,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:55,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:55,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 18:45:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-27 18:45:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:55,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:55,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:45:55,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:55,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:45:55,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:45:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-10-27 18:45:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:55,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:55,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:45:55,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 18:45:55,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:55,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:45:55,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 555 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-27 18:45:56,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675123752] [2020-10-27 18:45:56,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:56,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:56,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310416262] [2020-10-27 18:45:56,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:56,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:56,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:56,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:56,060 INFO L87 Difference]: Start difference. First operand 4174 states and 4708 transitions. Second operand 7 states. [2020-10-27 18:46:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:00,434 INFO L93 Difference]: Finished difference Result 9404 states and 10716 transitions. [2020-10-27 18:46:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:46:00,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 643 [2020-10-27 18:46:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:00,467 INFO L225 Difference]: With dead ends: 9404 [2020-10-27 18:46:00,468 INFO L226 Difference]: Without dead ends: 5236 [2020-10-27 18:46:00,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:00,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5236 states. [2020-10-27 18:46:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 5210. [2020-10-27 18:46:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5210 states. [2020-10-27 18:46:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 5805 transitions. [2020-10-27 18:46:00,633 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 5805 transitions. Word has length 643 [2020-10-27 18:46:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:00,634 INFO L481 AbstractCegarLoop]: Abstraction has 5210 states and 5805 transitions. [2020-10-27 18:46:00,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 5805 transitions. [2020-10-27 18:46:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-27 18:46:00,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:00,655 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:46:00,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:46:00,656 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:00,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1122797010, now seen corresponding path program 1 times [2020-10-27 18:46:00,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:00,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491089267] [2020-10-27 18:46:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:05,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 881 [2020-10-27 18:46:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:46:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 18:46:05,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:46:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 18:46:05,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:46:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:46:05,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 18:46:06,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:46:06,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 18:46:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:06,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 18:46:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:46:06,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:46:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 18:46:06,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 18:46:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:06,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 18:46:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:46:06,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 18:46:06,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 18:46:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:06,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-27 18:46:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:46:06,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 18:46:06,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 18:46:06,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:06,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:06,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2020-10-27 18:46:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:06,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:46:06,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 18:46:06,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:46:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:46:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:07,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:07,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:46:07,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:46:07,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 524 proven. 530 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-10-27 18:46:07,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491089267] [2020-10-27 18:46:07,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:07,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:46:07,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332544383] [2020-10-27 18:46:07,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:46:07,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:07,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:46:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:46:07,771 INFO L87 Difference]: Start difference. First operand 5210 states and 5805 transitions. Second operand 9 states. [2020-10-27 18:46:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:12,022 INFO L93 Difference]: Finished difference Result 13508 states and 15110 transitions. [2020-10-27 18:46:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:46:12,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 859 [2020-10-27 18:46:12,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:12,051 INFO L225 Difference]: With dead ends: 13508 [2020-10-27 18:46:12,052 INFO L226 Difference]: Without dead ends: 5884 [2020-10-27 18:46:12,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:46:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2020-10-27 18:46:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5180. [2020-10-27 18:46:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5180 states. [2020-10-27 18:46:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 5530 transitions. [2020-10-27 18:46:12,201 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 5530 transitions. Word has length 859 [2020-10-27 18:46:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:12,202 INFO L481 AbstractCegarLoop]: Abstraction has 5180 states and 5530 transitions. [2020-10-27 18:46:12,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:46:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 5530 transitions. [2020-10-27 18:46:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2020-10-27 18:46:12,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:12,221 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:46:12,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:46:12,222 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash 246555332, now seen corresponding path program 1 times [2020-10-27 18:46:12,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:12,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065764601] [2020-10-27 18:46:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:17,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 920 [2020-10-27 18:46:17,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:46:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 18:46:17,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:46:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 547 [2020-10-27 18:46:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 266 [2020-10-27 18:46:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:17,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:17,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:46:17,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:17,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:46:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:46:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:17,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 18:46:17,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:17,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:46:17,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:17,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-27 18:46:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:46:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:18,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-27 18:46:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:22,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:22,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:46:22,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:46:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4088 [2020-10-27 18:46:22,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:46:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 298 [2020-10-27 18:46:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:22,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:46:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:22,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:46:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:46:22,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:22,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:46:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 18:46:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 854 proven. 2 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2020-10-27 18:46:24,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065764601] [2020-10-27 18:46:24,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:24,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 18:46:24,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950875531] [2020-10-27 18:46:24,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 18:46:24,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:24,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 18:46:24,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:46:24,633 INFO L87 Difference]: Start difference. First operand 5180 states and 5530 transitions. Second operand 10 states. [2020-10-27 18:46:28,870 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 18:46:30,544 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-10-27 18:46:31,707 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 18:46:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:32,527 INFO L93 Difference]: Finished difference Result 10709 states and 11443 transitions. [2020-10-27 18:46:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 18:46:32,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 898 [2020-10-27 18:46:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:32,554 INFO L225 Difference]: With dead ends: 10709 [2020-10-27 18:46:32,554 INFO L226 Difference]: Without dead ends: 5535 [2020-10-27 18:46:32,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-27 18:46:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2020-10-27 18:46:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 5519. [2020-10-27 18:46:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5519 states. [2020-10-27 18:46:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 5873 transitions. [2020-10-27 18:46:32,699 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 5873 transitions. Word has length 898 [2020-10-27 18:46:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:32,701 INFO L481 AbstractCegarLoop]: Abstraction has 5519 states and 5873 transitions. [2020-10-27 18:46:32,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 18:46:32,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 5873 transitions. [2020-10-27 18:46:32,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2020-10-27 18:46:32,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:32,724 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:46:32,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:46:32,724 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:32,725 INFO L82 PathProgramCache]: Analyzing trace with hash -821029222, now seen corresponding path program 1 times [2020-10-27 18:46:32,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:32,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525905336] [2020-10-27 18:46:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:32,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:37,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1103 [2020-10-27 18:46:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:46:37,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 18:46:37,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 582 [2020-10-27 18:46:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:46:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:38,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:38,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:46:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:46:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:38,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:46:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:38,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:38,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:46:38,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:38,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:46:38,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:38,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:38,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:38,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:38,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-27 18:46:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:38,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:38,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:38,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 18:46:38,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:38,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:46:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:38,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-27 18:46:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:38,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:38,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:46:38,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:46:38,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:46:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-10-27 18:46:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:46:38,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:39,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 901 [2020-10-27 18:46:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:39,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:39,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:46:39,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:39,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:46:39,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:39,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:46:39,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:39,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2131 backedges. 622 proven. 138 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2020-10-27 18:46:39,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525905336] [2020-10-27 18:46:39,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:39,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:39,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605168210] [2020-10-27 18:46:39,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:39,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:39,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:39,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:39,818 INFO L87 Difference]: Start difference. First operand 5519 states and 5873 transitions. Second operand 7 states. [2020-10-27 18:46:44,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:44,180 INFO L93 Difference]: Finished difference Result 12412 states and 13218 transitions. [2020-10-27 18:46:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:46:44,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1081 [2020-10-27 18:46:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:44,204 INFO L225 Difference]: With dead ends: 12412 [2020-10-27 18:46:44,204 INFO L226 Difference]: Without dead ends: 6899 [2020-10-27 18:46:44,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:46:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2020-10-27 18:46:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6542. [2020-10-27 18:46:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6542 states. [2020-10-27 18:46:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6542 states to 6542 states and 6951 transitions. [2020-10-27 18:46:44,365 INFO L78 Accepts]: Start accepts. Automaton has 6542 states and 6951 transitions. Word has length 1081 [2020-10-27 18:46:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:44,366 INFO L481 AbstractCegarLoop]: Abstraction has 6542 states and 6951 transitions. [2020-10-27 18:46:44,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:44,367 INFO L276 IsEmpty]: Start isEmpty. Operand 6542 states and 6951 transitions. [2020-10-27 18:46:44,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1194 [2020-10-27 18:46:44,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:44,393 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:46:44,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:46:44,394 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:44,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1061510750, now seen corresponding path program 1 times [2020-10-27 18:46:44,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:44,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546487057] [2020-10-27 18:46:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:49,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:49,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1217 [2020-10-27 18:46:49,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:46:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 18:46:49,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 696 [2020-10-27 18:46:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:46:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:49,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:46:49,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:49,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:49,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:46:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:49,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:49,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:49,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:46:49,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:49,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:46:49,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:49,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-27 18:46:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-27 18:46:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 18:46:50,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:46:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-27 18:46:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:46:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 759 [2020-10-27 18:46:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:50,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2020-10-27 18:46:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:50,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:50,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:50,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:46:50,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:46:50,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:46:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2814 backedges. 767 proven. 138 refuted. 0 times theorem prover too weak. 1909 trivial. 0 not checked. [2020-10-27 18:46:51,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546487057] [2020-10-27 18:46:51,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:51,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:51,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103513310] [2020-10-27 18:46:51,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:51,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:51,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:51,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:51,707 INFO L87 Difference]: Start difference. First operand 6542 states and 6951 transitions. Second operand 7 states. [2020-10-27 18:46:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:56,283 INFO L93 Difference]: Finished difference Result 13533 states and 14620 transitions. [2020-10-27 18:46:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:46:56,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1193 [2020-10-27 18:46:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:56,308 INFO L225 Difference]: With dead ends: 13533 [2020-10-27 18:46:56,309 INFO L226 Difference]: Without dead ends: 6997 [2020-10-27 18:46:56,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:46:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2020-10-27 18:46:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 6883. [2020-10-27 18:46:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-10-27 18:46:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 7311 transitions. [2020-10-27 18:46:56,475 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 7311 transitions. Word has length 1193 [2020-10-27 18:46:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:56,476 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 7311 transitions. [2020-10-27 18:46:56,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 7311 transitions. [2020-10-27 18:46:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2020-10-27 18:46:56,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:56,503 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:46:56,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:46:56,503 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:56,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1537528212, now seen corresponding path program 1 times [2020-10-27 18:46:56,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:56,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97707604] [2020-10-27 18:46:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:59,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:01,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:01,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1222 [2020-10-27 18:47:01,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:47:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 18:47:01,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 18:47:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:47:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:01,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:01,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:01,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:01,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:47:01,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:01,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:01,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:47:01,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:47:01,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:01,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:47:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:47:02,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 18:47:02,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:02,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 18:47:02,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-27 18:47:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:02,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:02,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:02,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-27 18:47:02,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:47:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:03,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2020-10-27 18:47:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:03,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:03,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:47:03,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 18:47:03,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:47:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 18:47:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:04,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:04,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:47:04,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:04,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 18:47:04,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:04,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:04,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:47:04,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:04,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:47:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:04,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:04,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:04,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:47:04,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:04,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 630 proven. 534 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-27 18:47:05,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97707604] [2020-10-27 18:47:05,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:05,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:05,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102621246] [2020-10-27 18:47:05,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:05,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:05,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:05,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:05,435 INFO L87 Difference]: Start difference. First operand 6883 states and 7311 transitions. Second operand 7 states. [2020-10-27 18:47:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:09,793 INFO L93 Difference]: Finished difference Result 13780 states and 14651 transitions. [2020-10-27 18:47:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:47:09,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1200 [2020-10-27 18:47:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:09,812 INFO L225 Difference]: With dead ends: 13780 [2020-10-27 18:47:09,812 INFO L226 Difference]: Without dead ends: 6903 [2020-10-27 18:47:09,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:47:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6903 states. [2020-10-27 18:47:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6903 to 6883. [2020-10-27 18:47:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-10-27 18:47:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 7307 transitions. [2020-10-27 18:47:09,971 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 7307 transitions. Word has length 1200 [2020-10-27 18:47:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:09,972 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 7307 transitions. [2020-10-27 18:47:09,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 7307 transitions. [2020-10-27 18:47:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2020-10-27 18:47:10,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:10,001 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:47:10,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:47:10,002 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:10,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2135049776, now seen corresponding path program 1 times [2020-10-27 18:47:10,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:10,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806162931] [2020-10-27 18:47:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:11,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1350 [2020-10-27 18:47:15,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:47:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:47:15,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 435 [2020-10-27 18:47:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:47:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:15,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:15,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:15,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:15,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:47:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:47:15,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:47:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:47:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:47:15,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:15,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:47:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 18:47:15,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:15,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 18:47:15,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:15,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 18:47:15,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:15,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-27 18:47:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:16,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:47:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2020-10-27 18:47:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:17,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:17,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 967 [2020-10-27 18:47:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:17,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:47:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:17,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:17,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:47:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:17,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:17,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 830 proven. 534 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2020-10-27 18:47:18,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1806162931] [2020-10-27 18:47:18,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:18,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:47:18,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471081758] [2020-10-27 18:47:18,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:47:18,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:18,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:47:18,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:47:18,952 INFO L87 Difference]: Start difference. First operand 6883 states and 7307 transitions. Second operand 8 states. [2020-10-27 18:47:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:24,748 INFO L93 Difference]: Finished difference Result 16255 states and 17644 transitions. [2020-10-27 18:47:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:47:24,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1326 [2020-10-27 18:47:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:24,781 INFO L225 Difference]: With dead ends: 16255 [2020-10-27 18:47:24,781 INFO L226 Difference]: Without dead ends: 9378 [2020-10-27 18:47:24,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:47:24,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2020-10-27 18:47:24,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 9254. [2020-10-27 18:47:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9254 states. [2020-10-27 18:47:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 9726 transitions. [2020-10-27 18:47:24,999 INFO L78 Accepts]: Start accepts. Automaton has 9254 states and 9726 transitions. Word has length 1326 [2020-10-27 18:47:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:25,000 INFO L481 AbstractCegarLoop]: Abstraction has 9254 states and 9726 transitions. [2020-10-27 18:47:25,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:47:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9254 states and 9726 transitions. [2020-10-27 18:47:25,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1406 [2020-10-27 18:47:25,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:25,036 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:47:25,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:47:25,037 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:25,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:25,037 INFO L82 PathProgramCache]: Analyzing trace with hash 345264486, now seen corresponding path program 1 times [2020-10-27 18:47:25,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:25,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728043331] [2020-10-27 18:47:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:25,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1429 [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 514 [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:47:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:30,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:30,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:47:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:47:30,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:47:30,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:30,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:47:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:30,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-27 18:47:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:31,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-27 18:47:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:31,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:31,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:31,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:31,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:31,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-27 18:47:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:47:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 781 [2020-10-27 18:47:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1046 [2020-10-27 18:47:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:32,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:47:32,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:32,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:47:32,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:32,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:47:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:32,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:47:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:32,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:32,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:32,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3052 backedges. 909 proven. 534 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2020-10-27 18:47:33,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728043331] [2020-10-27 18:47:33,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:33,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:33,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687625335] [2020-10-27 18:47:33,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:33,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:33,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:33,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:33,412 INFO L87 Difference]: Start difference. First operand 9254 states and 9726 transitions. Second operand 7 states. [2020-10-27 18:47:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:38,712 INFO L93 Difference]: Finished difference Result 20692 states and 22247 transitions. [2020-10-27 18:47:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:47:38,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1405 [2020-10-27 18:47:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:38,750 INFO L225 Difference]: With dead ends: 20692 [2020-10-27 18:47:38,750 INFO L226 Difference]: Without dead ends: 11444 [2020-10-27 18:47:38,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:47:38,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11444 states. [2020-10-27 18:47:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11444 to 10955. [2020-10-27 18:47:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10955 states. [2020-10-27 18:47:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 11519 transitions. [2020-10-27 18:47:38,991 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 11519 transitions. Word has length 1405 [2020-10-27 18:47:38,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:38,992 INFO L481 AbstractCegarLoop]: Abstraction has 10955 states and 11519 transitions. [2020-10-27 18:47:38,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 11519 transitions. [2020-10-27 18:47:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1472 [2020-10-27 18:47:39,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:39,030 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:47:39,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:47:39,030 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:39,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:39,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1726242334, now seen corresponding path program 1 times [2020-10-27 18:47:39,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:39,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64099331] [2020-10-27 18:47:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:39,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:44,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1497 [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 582 [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:47:44,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:44,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:44,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:44,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:47:44,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:44,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:44,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 18:47:44,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:44,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:47:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 18:47:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:44,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:44,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:47:44,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:44,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:47:44,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:44,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:44,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:44,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:44,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:44,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-27 18:47:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:44,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:44,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:44,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:47:44,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:47:44,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-27 18:47:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-27 18:47:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:45,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-27 18:47:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:47:45,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:45,735 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-27 18:47:45,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 847 [2020-10-27 18:47:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:46,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:46,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:47:46,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:47:46,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:47:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-27 18:47:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:46,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:47:46,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 18:47:46,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:47:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:46,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:47:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:46,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:46,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:47:46,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:46,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:46,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3586 backedges. 1049 proven. 534 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2020-10-27 18:47:48,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64099331] [2020-10-27 18:47:48,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:48,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:48,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944463040] [2020-10-27 18:47:48,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:48,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:48,371 INFO L87 Difference]: Start difference. First operand 10955 states and 11519 transitions. Second operand 7 states. [2020-10-27 18:47:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:52,871 INFO L93 Difference]: Finished difference Result 24796 states and 26740 transitions. [2020-10-27 18:47:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:47:52,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1471 [2020-10-27 18:47:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:52,914 INFO L225 Difference]: With dead ends: 24796 [2020-10-27 18:47:52,914 INFO L226 Difference]: Without dead ends: 13847 [2020-10-27 18:47:52,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:47:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13847 states. [2020-10-27 18:47:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13847 to 12993. [2020-10-27 18:47:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12993 states. [2020-10-27 18:47:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12993 states to 12993 states and 13762 transitions. [2020-10-27 18:47:53,238 INFO L78 Accepts]: Start accepts. Automaton has 12993 states and 13762 transitions. Word has length 1471 [2020-10-27 18:47:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:53,239 INFO L481 AbstractCegarLoop]: Abstraction has 12993 states and 13762 transitions. [2020-10-27 18:47:53,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 12993 states and 13762 transitions. [2020-10-27 18:47:53,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2020-10-27 18:47:53,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:53,280 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:47:53,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:47:53,280 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:53,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:53,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1506724066, now seen corresponding path program 1 times [2020-10-27 18:47:53,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:53,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756541675] [2020-10-27 18:47:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:58,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1505 [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 514 [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 18:47:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:58,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:58,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:58,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:58,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:58,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:58,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:58,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:58,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:47:58,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:47:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:47:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:58,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:58,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:58,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:47:58,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:58,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:47:58,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:47:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-27 18:47:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:59,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-27 18:47:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:59,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:59,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:59,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:47:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:47:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:59,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:47:59,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-10-27 18:47:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:59,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2020-10-27 18:47:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:59,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:59,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 18:47:59,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 18:47:59,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 18:47:59,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:59,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1120 [2020-10-27 18:47:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:59,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:59,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 18:47:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:47:59,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-27 18:47:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:59,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:47:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3560 backedges. 707 proven. 215 refuted. 0 times theorem prover too weak. 2638 trivial. 0 not checked. [2020-10-27 18:48:00,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756541675] [2020-10-27 18:48:00,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:48:00,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:48:00,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719678133] [2020-10-27 18:48:00,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:48:00,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:00,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:48:00,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:48:00,987 INFO L87 Difference]: Start difference. First operand 12993 states and 13762 transitions. Second operand 7 states. [2020-10-27 18:48:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:48:05,636 INFO L93 Difference]: Finished difference Result 27358 states and 29114 transitions. [2020-10-27 18:48:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:48:05,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1479 [2020-10-27 18:48:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:48:05,671 INFO L225 Difference]: With dead ends: 27358 [2020-10-27 18:48:05,672 INFO L226 Difference]: Without dead ends: 14371 [2020-10-27 18:48:05,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:48:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14371 states. [2020-10-27 18:48:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14371 to 14351. [2020-10-27 18:48:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14351 states. [2020-10-27 18:48:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14351 states to 14351 states and 15144 transitions. [2020-10-27 18:48:05,965 INFO L78 Accepts]: Start accepts. Automaton has 14351 states and 15144 transitions. Word has length 1479 [2020-10-27 18:48:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:48:05,966 INFO L481 AbstractCegarLoop]: Abstraction has 14351 states and 15144 transitions. [2020-10-27 18:48:05,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:48:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 14351 states and 15144 transitions. [2020-10-27 18:48:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1528 [2020-10-27 18:48:06,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:06,002 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:48:06,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 18:48:06,003 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:06,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:06,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1130520690, now seen corresponding path program 1 times [2020-10-27 18:48:06,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:06,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872935195] [2020-10-27 18:48:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:48:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1553 [2020-10-27 18:48:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:48:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5257 [2020-10-27 18:48:11,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1105 [2020-10-27 18:48:11,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-27 18:48:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:48:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:48:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:48:11,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:48:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 18:48:11,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:48:11,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:11,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 18:48:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:11,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:11,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:11,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 18:48:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:48:11,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:48:11,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:11,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:11,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2020-10-27 18:48:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:12,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 18:48:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:12,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:12,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-27 18:48:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:12,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:12,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-27 18:48:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1093 [2020-10-27 18:48:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:12,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:12,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:48:12,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 18:48:12,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:48:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:48:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 18:48:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:12,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1347 [2020-10-27 18:48:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:48:12,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:48:13,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:48:13,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 18:48:13,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:48:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:48:13,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:48:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:48:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 18:48:13,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:48:13,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:48:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 1481 proven. 115 refuted. 0 times theorem prover too weak. 2204 trivial. 0 not checked. [2020-10-27 18:48:15,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872935195] [2020-10-27 18:48:15,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:48:15,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:48:15,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499409354] [2020-10-27 18:48:15,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:48:15,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:48:15,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:48:15,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:48:15,761 INFO L87 Difference]: Start difference. First operand 14351 states and 15144 transitions. Second operand 7 states. [2020-10-27 18:48:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:48:20,633 INFO L93 Difference]: Finished difference Result 29227 states and 31294 transitions. [2020-10-27 18:48:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:48:20,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1527 [2020-10-27 18:48:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:48:20,674 INFO L225 Difference]: With dead ends: 29227 [2020-10-27 18:48:20,674 INFO L226 Difference]: Without dead ends: 14882 [2020-10-27 18:48:20,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:48:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14882 states. [2020-10-27 18:48:20,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14882 to 14698. [2020-10-27 18:48:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14698 states. [2020-10-27 18:48:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14698 states to 14698 states and 15500 transitions. [2020-10-27 18:48:20,983 INFO L78 Accepts]: Start accepts. Automaton has 14698 states and 15500 transitions. Word has length 1527 [2020-10-27 18:48:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:48:20,984 INFO L481 AbstractCegarLoop]: Abstraction has 14698 states and 15500 transitions. [2020-10-27 18:48:20,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:48:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 14698 states and 15500 transitions. [2020-10-27 18:48:21,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1557 [2020-10-27 18:48:21,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:48:21,018 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 18:48:21,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 18:48:21,019 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:48:21,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:48:21,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1674304440, now seen corresponding path program 1 times [2020-10-27 18:48:21,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:48:21,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628840224] [2020-10-27 18:48:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY