/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:27:55,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:27:55,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:27:55,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:27:55,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:27:55,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:27:55,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:27:55,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:27:55,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:27:55,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:27:55,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:27:55,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:27:55,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:27:55,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:27:55,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:27:55,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:27:55,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:27:55,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:27:55,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:27:55,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:27:55,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:27:55,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:27:55,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:27:55,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:27:55,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:27:55,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:27:55,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:27:55,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:27:55,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:27:55,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:27:55,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:27:55,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:27:55,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:27:55,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:27:55,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:27:55,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:27:55,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:27:55,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:27:55,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:27:55,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:27:55,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:27:55,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:27:55,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:27:55,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:27:55,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:27:55,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:27:55,716 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:27:55,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:27:55,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:27:55,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:27:55,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:27:55,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:27:55,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:27:55,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:27:55,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:27:55,717 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:27:55,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:27:55,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:27:55,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:27:55,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:27:55,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:27:55,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:27:55,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:27:55,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:27:55,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:27:55,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:27:55,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:27:55,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:27:55,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:27:55,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:27:55,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:27:55,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:27:56,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:27:56,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:27:56,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:27:56,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:27:56,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:27:56,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label34.c [2020-10-26 23:27:56,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b2e544af/5000b8adabff45c98bde8937c0725c20/FLAGa38eb2b89 [2020-10-26 23:27:57,062 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:27:57,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label34.c [2020-10-26 23:27:57,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b2e544af/5000b8adabff45c98bde8937c0725c20/FLAGa38eb2b89 [2020-10-26 23:27:57,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b2e544af/5000b8adabff45c98bde8937c0725c20 [2020-10-26 23:27:57,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:27:57,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:27:57,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:27:57,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:27:57,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:27:57,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:27:57" (1/1) ... [2020-10-26 23:27:57,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e011e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:57, skipping insertion in model container [2020-10-26 23:27:57,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:27:57" (1/1) ... [2020-10-26 23:27:57,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:27:57,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:27:57,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:27:57,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:27:58,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:27:58,053 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:27:58,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58 WrapperNode [2020-10-26 23:27:58,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:27:58,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:27:58,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:27:58,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:27:58,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... [2020-10-26 23:27:58,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... [2020-10-26 23:27:58,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... [2020-10-26 23:27:58,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... [2020-10-26 23:27:58,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... [2020-10-26 23:27:58,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... [2020-10-26 23:27:58,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... [2020-10-26 23:27:58,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:27:58,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:27:58,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:27:58,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:27:58,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:27:58,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:27:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:27:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:27:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:27:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:27:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:27:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:27:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:27:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:27:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:27:58,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:27:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:27:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:27:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:27:58,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:27:58,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:27:58,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:27:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:27:58,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:28:00,039 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:28:00,040 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:28:00,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:00 BoogieIcfgContainer [2020-10-26 23:28:00,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:28:00,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:28:00,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:28:00,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:28:00,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:27:57" (1/3) ... [2020-10-26 23:28:00,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcac269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:00, skipping insertion in model container [2020-10-26 23:28:00,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:27:58" (2/3) ... [2020-10-26 23:28:00,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcac269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:00, skipping insertion in model container [2020-10-26 23:28:00,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:00" (3/3) ... [2020-10-26 23:28:00,052 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label34.c [2020-10-26 23:28:00,065 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:28:00,071 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:28:00,087 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:28:00,118 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:28:00,118 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:28:00,118 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:28:00,118 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:28:00,118 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:28:00,119 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:28:00,119 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:28:00,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:28:00,146 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:28:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-26 23:28:00,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:00,154 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] [2020-10-26 23:28:00,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:00,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:00,162 INFO L82 PathProgramCache]: Analyzing trace with hash 424070208, now seen corresponding path program 1 times [2020-10-26 23:28:00,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:00,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816572023] [2020-10-26 23:28:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:00,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:00,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-26 23:28:00,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-26 23:28:00,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:00,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:00,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:00,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 23:28:00,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:28:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:01,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:28:01,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:01,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816572023] [2020-10-26 23:28:01,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:01,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:28:01,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858913945] [2020-10-26 23:28:01,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:28:01,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:28:01,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:28:01,237 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:28:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:05,239 INFO L93 Difference]: Finished difference Result 891 states and 1618 transitions. [2020-10-26 23:28:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:28:05,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-26 23:28:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:05,261 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:28:05,262 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:28:05,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:28:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-26 23:28:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-26 23:28:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 856 transitions. [2020-10-26 23:28:05,371 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 856 transitions. Word has length 34 [2020-10-26 23:28:05,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:05,372 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 856 transitions. [2020-10-26 23:28:05,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:28:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 856 transitions. [2020-10-26 23:28:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-26 23:28:05,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:05,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:05,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:28:05,381 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash 710816396, now seen corresponding path program 1 times [2020-10-26 23:28:05,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:05,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798830380] [2020-10-26 23:28:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:28:06,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:06,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-10-26 23:28:06,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:06,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:28:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:06,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:28:06,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:06,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:06,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:06,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:06,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:28:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:28:06,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:28:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:06,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798830380] [2020-10-26 23:28:06,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:06,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:28:06,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545649778] [2020-10-26 23:28:06,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:06,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:06,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:06,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:06,697 INFO L87 Difference]: Start difference. First operand 561 states and 856 transitions. Second operand 7 states. [2020-10-26 23:28:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:09,824 INFO L93 Difference]: Finished difference Result 1726 states and 2753 transitions. [2020-10-26 23:28:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:09,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-26 23:28:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:09,837 INFO L225 Difference]: With dead ends: 1726 [2020-10-26 23:28:09,838 INFO L226 Difference]: Without dead ends: 1171 [2020-10-26 23:28:09,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2020-10-26 23:28:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 941. [2020-10-26 23:28:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2020-10-26 23:28:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1306 transitions. [2020-10-26 23:28:09,916 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1306 transitions. Word has length 103 [2020-10-26 23:28:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:09,916 INFO L481 AbstractCegarLoop]: Abstraction has 941 states and 1306 transitions. [2020-10-26 23:28:09,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:09,917 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1306 transitions. [2020-10-26 23:28:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-26 23:28:09,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:09,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:09,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:28:09,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1033195388, now seen corresponding path program 1 times [2020-10-26 23:28:09,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:09,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640942053] [2020-10-26 23:28:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:28:11,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-26 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:28:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:11,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:11,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:11,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:11,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:11,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:28:11,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:11,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:11,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:11,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:11,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:11,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:11,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:11,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:28:11,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:28:11,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640942053] [2020-10-26 23:28:11,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:28:11,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:28:11,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086567860] [2020-10-26 23:28:11,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:11,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:11,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:11,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:11,504 INFO L87 Difference]: Start difference. First operand 941 states and 1306 transitions. Second operand 7 states. [2020-10-26 23:28:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:14,442 INFO L93 Difference]: Finished difference Result 2266 states and 3303 transitions. [2020-10-26 23:28:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:28:14,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-26 23:28:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:14,455 INFO L225 Difference]: With dead ends: 2266 [2020-10-26 23:28:14,456 INFO L226 Difference]: Without dead ends: 1699 [2020-10-26 23:28:14,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2020-10-26 23:28:14,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1501. [2020-10-26 23:28:14,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2020-10-26 23:28:14,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1934 transitions. [2020-10-26 23:28:14,519 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1934 transitions. Word has length 107 [2020-10-26 23:28:14,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:14,520 INFO L481 AbstractCegarLoop]: Abstraction has 1501 states and 1934 transitions. [2020-10-26 23:28:14,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:14,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1934 transitions. [2020-10-26 23:28:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-26 23:28:14,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:14,525 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:14,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:28:14,525 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:14,526 INFO L82 PathProgramCache]: Analyzing trace with hash 83144088, now seen corresponding path program 1 times [2020-10-26 23:28:14,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:14,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111876632] [2020-10-26 23:28:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-26 23:28:15,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-10-26 23:28:15,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:28:15,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:28:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:15,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:15,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:15,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:15,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:15,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:28:15,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:15,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:16,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:28:16,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:16,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:28:16,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:16,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:16,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:28:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:28:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:16,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:16,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:16,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:28:16,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:28:16,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111876632] [2020-10-26 23:28:16,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:16,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:16,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116858679] [2020-10-26 23:28:16,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:16,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:16,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:16,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:16,676 INFO L87 Difference]: Start difference. First operand 1501 states and 1934 transitions. Second operand 7 states. [2020-10-26 23:28:16,934 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-26 23:28:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:18,988 INFO L93 Difference]: Finished difference Result 2562 states and 3401 transitions. [2020-10-26 23:28:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:28:18,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-26 23:28:18,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:18,996 INFO L225 Difference]: With dead ends: 2562 [2020-10-26 23:28:18,997 INFO L226 Difference]: Without dead ends: 1171 [2020-10-26 23:28:19,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2020-10-26 23:28:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1119. [2020-10-26 23:28:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-10-26 23:28:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1276 transitions. [2020-10-26 23:28:19,046 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1276 transitions. Word has length 191 [2020-10-26 23:28:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:19,046 INFO L481 AbstractCegarLoop]: Abstraction has 1119 states and 1276 transitions. [2020-10-26 23:28:19,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1276 transitions. [2020-10-26 23:28:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-26 23:28:19,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:19,054 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:28:19,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:28:19,055 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:19,056 INFO L82 PathProgramCache]: Analyzing trace with hash -873235960, now seen corresponding path program 1 times [2020-10-26 23:28:19,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:19,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912753185] [2020-10-26 23:28:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:23,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:23,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-26 23:28:23,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:23,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4662 [2020-10-26 23:28:23,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:28:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:28:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:23,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:23,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:23,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:23,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:23,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:28:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:28:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:24,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 23:28:24,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:28:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:28:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:28:24,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:28:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 52 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:28:24,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912753185] [2020-10-26 23:28:24,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:24,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:24,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175330346] [2020-10-26 23:28:24,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:24,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:24,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:24,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:24,421 INFO L87 Difference]: Start difference. First operand 1119 states and 1276 transitions. Second operand 7 states. [2020-10-26 23:28:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:26,632 INFO L93 Difference]: Finished difference Result 2812 states and 3315 transitions. [2020-10-26 23:28:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:26,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-26 23:28:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:26,647 INFO L225 Difference]: With dead ends: 2812 [2020-10-26 23:28:26,647 INFO L226 Difference]: Without dead ends: 1881 [2020-10-26 23:28:26,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-10-26 23:28:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1677. [2020-10-26 23:28:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-10-26 23:28:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1871 transitions. [2020-10-26 23:28:26,711 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1871 transitions. Word has length 216 [2020-10-26 23:28:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:26,712 INFO L481 AbstractCegarLoop]: Abstraction has 1677 states and 1871 transitions. [2020-10-26 23:28:26,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1871 transitions. [2020-10-26 23:28:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-26 23:28:26,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:26,721 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:26,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:28:26,721 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:26,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:26,722 INFO L82 PathProgramCache]: Analyzing trace with hash -920549880, now seen corresponding path program 1 times [2020-10-26 23:28:26,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:26,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849753054] [2020-10-26 23:28:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:26,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:31,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:31,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-26 23:28:31,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 23:28:31,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:28:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:28:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:32,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:32,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:32,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:28:32,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:32,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:32,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:32,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:28:32,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:32,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:32,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:32,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:28:32,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:28:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:32,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:32,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:28:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:28:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:28:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:32,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:32,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:32,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:28:32,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:28:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 330 proven. 72 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-26 23:28:32,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849753054] [2020-10-26 23:28:32,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:32,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:32,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59447941] [2020-10-26 23:28:32,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:32,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:32,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:32,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:32,848 INFO L87 Difference]: Start difference. First operand 1677 states and 1871 transitions. Second operand 7 states. [2020-10-26 23:28:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:36,414 INFO L93 Difference]: Finished difference Result 3748 states and 4377 transitions. [2020-10-26 23:28:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:28:36,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-26 23:28:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:36,427 INFO L225 Difference]: With dead ends: 3748 [2020-10-26 23:28:36,428 INFO L226 Difference]: Without dead ends: 2443 [2020-10-26 23:28:36,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:36,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2020-10-26 23:28:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2427. [2020-10-26 23:28:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-10-26 23:28:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 2822 transitions. [2020-10-26 23:28:36,518 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 2822 transitions. Word has length 436 [2020-10-26 23:28:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:36,520 INFO L481 AbstractCegarLoop]: Abstraction has 2427 states and 2822 transitions. [2020-10-26 23:28:36,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 2822 transitions. [2020-10-26 23:28:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-26 23:28:36,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:36,529 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:36,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:28:36,530 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:36,530 INFO L82 PathProgramCache]: Analyzing trace with hash 734952540, now seen corresponding path program 1 times [2020-10-26 23:28:36,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:36,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586408368] [2020-10-26 23:28:36,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:41,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-26 23:28:41,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:28:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:28:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:28:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-26 23:28:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:41,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:41,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:28:41,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:41,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:41,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:41,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:41,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:28:41,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:41,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:41,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:28:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:28:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:42,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:28:42,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:28:42,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:42,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:42,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:42,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:42,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:28:42,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:42,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 464 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-26 23:28:42,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586408368] [2020-10-26 23:28:42,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:42,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:28:42,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31422296] [2020-10-26 23:28:42,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:28:42,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:42,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:28:42,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:28:42,845 INFO L87 Difference]: Start difference. First operand 2427 states and 2822 transitions. Second operand 8 states. [2020-10-26 23:28:46,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:46,353 INFO L93 Difference]: Finished difference Result 4694 states and 5542 transitions. [2020-10-26 23:28:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:28:46,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 443 [2020-10-26 23:28:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:46,368 INFO L225 Difference]: With dead ends: 4694 [2020-10-26 23:28:46,369 INFO L226 Difference]: Without dead ends: 2639 [2020-10-26 23:28:46,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:28:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-10-26 23:28:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2613. [2020-10-26 23:28:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2020-10-26 23:28:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3010 transitions. [2020-10-26 23:28:46,445 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3010 transitions. Word has length 443 [2020-10-26 23:28:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:46,446 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3010 transitions. [2020-10-26 23:28:46,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:28:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3010 transitions. [2020-10-26 23:28:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2020-10-26 23:28:46,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:46,464 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:46,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:28:46,464 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:46,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1475550188, now seen corresponding path program 1 times [2020-10-26 23:28:46,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:46,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059493539] [2020-10-26 23:28:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:49,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 622 [2020-10-26 23:28:49,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3346 [2020-10-26 23:28:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:28:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:28:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:50,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:28:50,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:28:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:28:50,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:50,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:28:50,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:50,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:28:50,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:50,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:28:50,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:28:50,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:50,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:50,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:28:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:28:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:50,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:50,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:50,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:28:50,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:28:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:28:51,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059493539] [2020-10-26 23:28:51,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:51,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:51,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898181540] [2020-10-26 23:28:51,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:51,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:51,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:51,050 INFO L87 Difference]: Start difference. First operand 2613 states and 3010 transitions. Second operand 7 states. [2020-10-26 23:28:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:54,261 INFO L93 Difference]: Finished difference Result 5432 states and 6400 transitions. [2020-10-26 23:28:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:28:54,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 602 [2020-10-26 23:28:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:54,283 INFO L225 Difference]: With dead ends: 5432 [2020-10-26 23:28:54,283 INFO L226 Difference]: Without dead ends: 3191 [2020-10-26 23:28:54,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:28:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2020-10-26 23:28:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3175. [2020-10-26 23:28:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3175 states. [2020-10-26 23:28:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 3644 transitions. [2020-10-26 23:28:54,374 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 3644 transitions. Word has length 602 [2020-10-26 23:28:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:54,375 INFO L481 AbstractCegarLoop]: Abstraction has 3175 states and 3644 transitions. [2020-10-26 23:28:54,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 3644 transitions. [2020-10-26 23:28:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2020-10-26 23:28:54,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:54,383 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:54,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:28:54,383 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash 521722136, now seen corresponding path program 1 times [2020-10-26 23:28:54,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:54,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535666719] [2020-10-26 23:28:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:55,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-26 23:28:59,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:28:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:28:59,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:28:59,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:28:59,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:59,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:28:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:59,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:59,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:59,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:59,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:59,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:28:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:59,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:00,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:00,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:00,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:29:00,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:29:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:00,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:00,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:00,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:29:00,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:29:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:00,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:29:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:00,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:00,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:00,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:00,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:29:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1489 backedges. 479 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-26 23:29:00,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535666719] [2020-10-26 23:29:00,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:00,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:00,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144923406] [2020-10-26 23:29:00,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:00,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:00,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:00,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:00,534 INFO L87 Difference]: Start difference. First operand 3175 states and 3644 transitions. Second operand 7 states. [2020-10-26 23:29:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:03,142 INFO L93 Difference]: Finished difference Result 7278 states and 8653 transitions. [2020-10-26 23:29:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:03,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 678 [2020-10-26 23:29:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:03,166 INFO L225 Difference]: With dead ends: 7278 [2020-10-26 23:29:03,166 INFO L226 Difference]: Without dead ends: 4475 [2020-10-26 23:29:03,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:03,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2020-10-26 23:29:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4099. [2020-10-26 23:29:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2020-10-26 23:29:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 4683 transitions. [2020-10-26 23:29:03,311 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 4683 transitions. Word has length 678 [2020-10-26 23:29:03,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:03,312 INFO L481 AbstractCegarLoop]: Abstraction has 4099 states and 4683 transitions. [2020-10-26 23:29:03,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 4683 transitions. [2020-10-26 23:29:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2020-10-26 23:29:03,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:03,324 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:03,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:29:03,324 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:03,325 INFO L82 PathProgramCache]: Analyzing trace with hash -451328328, now seen corresponding path program 1 times [2020-10-26 23:29:03,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:03,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755099322] [2020-10-26 23:29:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:03,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:08,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:08,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 759 [2020-10-26 23:29:08,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:29:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:29:08,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:29:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:29:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:08,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:08,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:29:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:08,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:08,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:08,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:08,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:08,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:08,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:08,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:08,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:08,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:08,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:29:08,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:08,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:08,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:08,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:08,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:29:08,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:29:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:09,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:09,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:09,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 23:29:09,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:29:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:09,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:29:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:09,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:09,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:09,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:29:09,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:29:09,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:09,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:29:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:09,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:09,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:29:09,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:29:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:29:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 517 proven. 186 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-26 23:29:09,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755099322] [2020-10-26 23:29:09,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:09,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:09,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334114813] [2020-10-26 23:29:09,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:09,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:09,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:09,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:09,978 INFO L87 Difference]: Start difference. First operand 4099 states and 4683 transitions. Second operand 7 states. [2020-10-26 23:29:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:12,558 INFO L93 Difference]: Finished difference Result 8954 states and 10495 transitions. [2020-10-26 23:29:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:29:12,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 737 [2020-10-26 23:29:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:12,583 INFO L225 Difference]: With dead ends: 8954 [2020-10-26 23:29:12,584 INFO L226 Difference]: Without dead ends: 5227 [2020-10-26 23:29:12,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:29:12,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5227 states. [2020-10-26 23:29:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5227 to 5201. [2020-10-26 23:29:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5201 states. [2020-10-26 23:29:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 5850 transitions. [2020-10-26 23:29:12,797 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 5850 transitions. Word has length 737 [2020-10-26 23:29:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:12,798 INFO L481 AbstractCegarLoop]: Abstraction has 5201 states and 5850 transitions. [2020-10-26 23:29:12,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 5850 transitions. [2020-10-26 23:29:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2020-10-26 23:29:12,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:12,811 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:12,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:29:12,811 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:12,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1132617976, now seen corresponding path program 1 times [2020-10-26 23:29:12,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:12,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565273535] [2020-10-26 23:29:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:13,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 797 [2020-10-26 23:29:15,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2547 [2020-10-26 23:29:15,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:29:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:29:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:29:15,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:15,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:15,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:15,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:15,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:15,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:15,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:29:15,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:15,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:29:15,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:29:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:29:16,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 526 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:29:16,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565273535] [2020-10-26 23:29:16,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:16,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:29:16,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329803029] [2020-10-26 23:29:16,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:29:16,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:16,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:29:16,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:29:16,517 INFO L87 Difference]: Start difference. First operand 5201 states and 5850 transitions. Second operand 7 states. [2020-10-26 23:29:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:19,065 INFO L93 Difference]: Finished difference Result 10588 states and 12114 transitions. [2020-10-26 23:29:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:29:19,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 775 [2020-10-26 23:29:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:19,107 INFO L225 Difference]: With dead ends: 10588 [2020-10-26 23:29:19,108 INFO L226 Difference]: Without dead ends: 5759 [2020-10-26 23:29:19,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:29:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5759 states. [2020-10-26 23:29:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5759 to 5755. [2020-10-26 23:29:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5755 states. [2020-10-26 23:29:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 6461 transitions. [2020-10-26 23:29:19,266 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 6461 transitions. Word has length 775 [2020-10-26 23:29:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:19,266 INFO L481 AbstractCegarLoop]: Abstraction has 5755 states and 6461 transitions. [2020-10-26 23:29:19,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 6461 transitions. [2020-10-26 23:29:19,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-26 23:29:19,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:19,277 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:19,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:29:19,277 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:19,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:19,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2019884884, now seen corresponding path program 1 times [2020-10-26 23:29:19,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:19,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950703102] [2020-10-26 23:29:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:19,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-26 23:29:21,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-26 23:29:21,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-26 23:29:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 23:29:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:21,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:21,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:21,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:21,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:21,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:29:21,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:21,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:21,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:21,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:21,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:29:21,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:21,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:21,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:21,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:21,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:29:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2154 backedges. 193 proven. 7 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2020-10-26 23:29:22,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950703102] [2020-10-26 23:29:22,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:22,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:29:22,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996148867] [2020-10-26 23:29:22,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:29:22,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:22,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:29:22,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:29:22,325 INFO L87 Difference]: Start difference. First operand 5755 states and 6461 transitions. Second operand 5 states. [2020-10-26 23:29:24,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:24,214 INFO L93 Difference]: Finished difference Result 11328 states and 12985 transitions. [2020-10-26 23:29:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:29:24,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 818 [2020-10-26 23:29:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:24,232 INFO L225 Difference]: With dead ends: 11328 [2020-10-26 23:29:24,232 INFO L226 Difference]: Without dead ends: 5391 [2020-10-26 23:29:24,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:29:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2020-10-26 23:29:24,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 4839. [2020-10-26 23:29:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-10-26 23:29:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 5472 transitions. [2020-10-26 23:29:24,383 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 5472 transitions. Word has length 818 [2020-10-26 23:29:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:24,384 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 5472 transitions. [2020-10-26 23:29:24,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:29:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 5472 transitions. [2020-10-26 23:29:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2020-10-26 23:29:24,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:24,400 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:24,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:29:24,400 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1274433500, now seen corresponding path program 1 times [2020-10-26 23:29:24,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:24,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564923007] [2020-10-26 23:29:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:28,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 927 [2020-10-26 23:29:29,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:29:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:29:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:29,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:29:29,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:29,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:29,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:29,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:29,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:29:29,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:29,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:29,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:29,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:29,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:29,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:29:29,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:29,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:29,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:29,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:30,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:29:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:30,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:29:30,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:29:30,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:30,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 23:29:30,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:29:30,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:30,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:29:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:30,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:30,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:30,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:29:30,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 1330 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:29:31,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564923007] [2020-10-26 23:29:31,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:31,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:31,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104799940] [2020-10-26 23:29:31,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:31,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:31,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:31,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:31,416 INFO L87 Difference]: Start difference. First operand 4839 states and 5472 transitions. Second operand 10 states. [2020-10-26 23:29:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:34,832 INFO L93 Difference]: Finished difference Result 11044 states and 12792 transitions. [2020-10-26 23:29:34,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:29:34,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 901 [2020-10-26 23:29:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:34,854 INFO L225 Difference]: With dead ends: 11044 [2020-10-26 23:29:34,855 INFO L226 Difference]: Without dead ends: 6542 [2020-10-26 23:29:34,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:29:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2020-10-26 23:29:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6141. [2020-10-26 23:29:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2020-10-26 23:29:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7175 transitions. [2020-10-26 23:29:35,025 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7175 transitions. Word has length 901 [2020-10-26 23:29:35,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:35,026 INFO L481 AbstractCegarLoop]: Abstraction has 6141 states and 7175 transitions. [2020-10-26 23:29:35,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7175 transitions. [2020-10-26 23:29:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-10-26 23:29:35,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:35,043 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:35,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:29:35,043 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:35,044 INFO L82 PathProgramCache]: Analyzing trace with hash 544287524, now seen corresponding path program 1 times [2020-10-26 23:29:35,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:35,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772763458] [2020-10-26 23:29:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:35,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:37,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 960 [2020-10-26 23:29:40,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-26 23:29:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:29:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:40,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:29:40,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:40,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:29:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:40,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:40,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:29:40,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:29:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:40,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:40,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:40,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:40,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:29:40,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:40,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:40,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:41,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:41,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:41,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:29:41,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:41,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:41,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:41,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:29:41,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-26 23:29:41,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:41,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:29:41,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:29:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:41,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:41,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:41,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:29:41,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2788 backedges. 1366 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:29:42,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772763458] [2020-10-26 23:29:42,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:42,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:29:42,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996063580] [2020-10-26 23:29:42,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:29:42,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:42,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:29:42,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:29:42,431 INFO L87 Difference]: Start difference. First operand 6141 states and 7175 transitions. Second operand 9 states. [2020-10-26 23:29:42,924 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 23:29:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:46,088 INFO L93 Difference]: Finished difference Result 12344 states and 14467 transitions. [2020-10-26 23:29:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:29:46,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 934 [2020-10-26 23:29:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:46,113 INFO L225 Difference]: With dead ends: 12344 [2020-10-26 23:29:46,113 INFO L226 Difference]: Without dead ends: 6542 [2020-10-26 23:29:46,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:29:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2020-10-26 23:29:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6141. [2020-10-26 23:29:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2020-10-26 23:29:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7166 transitions. [2020-10-26 23:29:46,284 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7166 transitions. Word has length 934 [2020-10-26 23:29:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:46,285 INFO L481 AbstractCegarLoop]: Abstraction has 6141 states and 7166 transitions. [2020-10-26 23:29:46,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:29:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7166 transitions. [2020-10-26 23:29:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2020-10-26 23:29:46,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:46,299 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:46,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:29:46,300 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1751578592, now seen corresponding path program 1 times [2020-10-26 23:29:46,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:46,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357810767] [2020-10-26 23:29:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 961 [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:29:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:51,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:29:51,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:51,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:51,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:51,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:51,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:51,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:51,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:51,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:29:51,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:29:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:51,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:51,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:29:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:52,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:52,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:52,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:29:52,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:29:52,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:52,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:29:52,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:52,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:29:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:52,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:52,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:29:52,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:52,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 23:29:52,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:52,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:52,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:29:52,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:29:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:52,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:52,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:52,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:52,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:29:52,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2789 backedges. 1341 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:29:53,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357810767] [2020-10-26 23:29:53,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:53,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:53,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952850065] [2020-10-26 23:29:53,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:53,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:53,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:53,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:53,400 INFO L87 Difference]: Start difference. First operand 6141 states and 7166 transitions. Second operand 10 states. [2020-10-26 23:29:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:57,097 INFO L93 Difference]: Finished difference Result 12314 states and 14407 transitions. [2020-10-26 23:29:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:29:57,105 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 935 [2020-10-26 23:29:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:57,125 INFO L225 Difference]: With dead ends: 12314 [2020-10-26 23:29:57,125 INFO L226 Difference]: Without dead ends: 6510 [2020-10-26 23:29:57,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:29:57,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2020-10-26 23:29:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 6139. [2020-10-26 23:29:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6139 states. [2020-10-26 23:29:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 7135 transitions. [2020-10-26 23:29:57,294 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 7135 transitions. Word has length 935 [2020-10-26 23:29:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:57,295 INFO L481 AbstractCegarLoop]: Abstraction has 6139 states and 7135 transitions. [2020-10-26 23:29:57,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:29:57,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 7135 transitions. [2020-10-26 23:29:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2020-10-26 23:29:57,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:57,311 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:29:57,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:29:57,311 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1436280860, now seen corresponding path program 1 times [2020-10-26 23:29:57,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:57,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662974029] [2020-10-26 23:29:57,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:57,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:58,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 972 [2020-10-26 23:30:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-26 23:30:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:30:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:30:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:02,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:02,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:02,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:02,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:30:02,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:02,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:02,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:02,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:02,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:02,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:30:02,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:02,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:02,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:30:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:02,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:30:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:30:03,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:03,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-26 23:30:03,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:03,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:03,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:30:03,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:30:03,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 23:30:03,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:30:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:30:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:03,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:30:03,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:30:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:30:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:03,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:30:03,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:30:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2782 backedges. 832 proven. 152 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2020-10-26 23:30:04,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662974029] [2020-10-26 23:30:04,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:04,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:30:04,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656768740] [2020-10-26 23:30:04,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:30:04,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:04,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:30:04,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:30:04,646 INFO L87 Difference]: Start difference. First operand 6139 states and 7135 transitions. Second operand 7 states. [2020-10-26 23:30:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:07,201 INFO L93 Difference]: Finished difference Result 12832 states and 15211 transitions. [2020-10-26 23:30:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:30:07,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 946 [2020-10-26 23:30:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:07,230 INFO L225 Difference]: With dead ends: 12832 [2020-10-26 23:30:07,231 INFO L226 Difference]: Without dead ends: 6881 [2020-10-26 23:30:07,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6881 states. [2020-10-26 23:30:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6881 to 6513. [2020-10-26 23:30:07,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6513 states. [2020-10-26 23:30:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6513 states to 6513 states and 7587 transitions. [2020-10-26 23:30:07,401 INFO L78 Accepts]: Start accepts. Automaton has 6513 states and 7587 transitions. Word has length 946 [2020-10-26 23:30:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:07,402 INFO L481 AbstractCegarLoop]: Abstraction has 6513 states and 7587 transitions. [2020-10-26 23:30:07,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:30:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6513 states and 7587 transitions. [2020-10-26 23:30:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2020-10-26 23:30:07,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:07,419 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:07,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:30:07,419 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:07,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1981553588, now seen corresponding path program 1 times [2020-10-26 23:30:07,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:07,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639967784] [2020-10-26 23:30:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 995 [2020-10-26 23:30:12,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4895 [2020-10-26 23:30:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:30:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:30:12,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:30:12,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:12,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:30:12,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:12,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:12,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:12,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:12,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:12,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:30:12,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:12,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:30:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:30:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:30:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:30:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:13,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 23:30:13,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:30:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:13,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:13,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:30:13,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:30:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:13,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:30:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2833 backedges. 1382 proven. 85 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:30:14,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639967784] [2020-10-26 23:30:14,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:14,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:30:14,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749888204] [2020-10-26 23:30:14,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:30:14,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:14,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:30:14,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:14,629 INFO L87 Difference]: Start difference. First operand 6513 states and 7587 transitions. Second operand 10 states. [2020-10-26 23:30:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:19,221 INFO L93 Difference]: Finished difference Result 13575 states and 15903 transitions. [2020-10-26 23:30:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:30:19,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 969 [2020-10-26 23:30:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:19,258 INFO L225 Difference]: With dead ends: 13575 [2020-10-26 23:30:19,259 INFO L226 Difference]: Without dead ends: 7434 [2020-10-26 23:30:19,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:30:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7434 states. [2020-10-26 23:30:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7434 to 7063. [2020-10-26 23:30:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7063 states. [2020-10-26 23:30:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 8169 transitions. [2020-10-26 23:30:19,464 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 8169 transitions. Word has length 969 [2020-10-26 23:30:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:19,466 INFO L481 AbstractCegarLoop]: Abstraction has 7063 states and 8169 transitions. [2020-10-26 23:30:19,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:30:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 8169 transitions. [2020-10-26 23:30:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2020-10-26 23:30:19,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:19,489 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:19,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:30:19,490 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:19,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:19,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1208915704, now seen corresponding path program 1 times [2020-10-26 23:30:19,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:19,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229934410] [2020-10-26 23:30:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:19,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-26 23:30:24,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:30:24,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:30:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:30:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:30:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:24,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:24,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:25,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:25,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:30:25,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:25,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:25,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:25,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:25,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:25,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:30:25,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:30:25,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:30:25,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:30:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:30:25,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:30:25,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:25,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:30:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:30:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:30:25,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:30:25,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:30:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:25,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:30:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:25,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:25,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:25,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:25,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:30:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:30:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:30:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 1147 proven. 72 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:30:26,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229934410] [2020-10-26 23:30:26,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:26,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:30:26,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866430898] [2020-10-26 23:30:26,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:30:26,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:26,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:30:26,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:30:26,919 INFO L87 Difference]: Start difference. First operand 7063 states and 8169 transitions. Second operand 10 states. [2020-10-26 23:30:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:30,708 INFO L93 Difference]: Finished difference Result 15644 states and 18357 transitions. [2020-10-26 23:30:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:30:30,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1020 [2020-10-26 23:30:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:30,735 INFO L225 Difference]: With dead ends: 15644 [2020-10-26 23:30:30,735 INFO L226 Difference]: Without dead ends: 8916 [2020-10-26 23:30:30,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:30:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8916 states. [2020-10-26 23:30:30,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8916 to 8903. [2020-10-26 23:30:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8903 states. [2020-10-26 23:30:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8903 states to 8903 states and 10415 transitions. [2020-10-26 23:30:30,933 INFO L78 Accepts]: Start accepts. Automaton has 8903 states and 10415 transitions. Word has length 1020 [2020-10-26 23:30:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:30,934 INFO L481 AbstractCegarLoop]: Abstraction has 8903 states and 10415 transitions. [2020-10-26 23:30:30,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:30:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8903 states and 10415 transitions. [2020-10-26 23:30:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-26 23:30:30,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:30,953 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:30,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:30:30,953 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:30,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:30,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2093041732, now seen corresponding path program 1 times [2020-10-26 23:30:30,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:30,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982140194] [2020-10-26 23:30:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:31,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1112 [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:30:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:36,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:30:36,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:36,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:30:36,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:36,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:30:36,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:36,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:36,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:30:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:36,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:30:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:30:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:36,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:36,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:30:36,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:30:36,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:30:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:36,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:30:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:37,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:30:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:30:37,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:30:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:30:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:30:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:37,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:37,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:30:37,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:37,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:30:37,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:37,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:30:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3656 backedges. 2003 proven. 275 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:30:39,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982140194] [2020-10-26 23:30:39,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:39,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:30:39,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826722979] [2020-10-26 23:30:39,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:30:39,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:39,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:30:39,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:30:39,143 INFO L87 Difference]: Start difference. First operand 8903 states and 10415 transitions. Second operand 11 states. [2020-10-26 23:30:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:43,837 INFO L93 Difference]: Finished difference Result 17625 states and 20682 transitions. [2020-10-26 23:30:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:30:43,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1084 [2020-10-26 23:30:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:43,859 INFO L225 Difference]: With dead ends: 17625 [2020-10-26 23:30:43,859 INFO L226 Difference]: Without dead ends: 9094 [2020-10-26 23:30:43,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-26 23:30:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9094 states. [2020-10-26 23:30:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9094 to 8903. [2020-10-26 23:30:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8903 states. [2020-10-26 23:30:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8903 states to 8903 states and 10405 transitions. [2020-10-26 23:30:44,078 INFO L78 Accepts]: Start accepts. Automaton has 8903 states and 10405 transitions. Word has length 1084 [2020-10-26 23:30:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:44,079 INFO L481 AbstractCegarLoop]: Abstraction has 8903 states and 10405 transitions. [2020-10-26 23:30:44,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:30:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8903 states and 10405 transitions. [2020-10-26 23:30:44,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-26 23:30:44,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:44,099 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 6, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:44,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:30:44,099 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:44,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:44,100 INFO L82 PathProgramCache]: Analyzing trace with hash -877084740, now seen corresponding path program 1 times [2020-10-26 23:30:44,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:44,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789057837] [2020-10-26 23:30:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1155 [2020-10-26 23:30:49,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:30:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-26 23:30:49,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:30:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:30:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:30:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:49,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:30:49,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:30:49,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:49,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:49,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:30:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:30:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:30:49,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:30:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:49,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:30:49,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:30:49,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:49,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:30:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:49,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:30:49,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:30:49,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:49,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:49,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:30:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:49,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:49,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:49,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:30:49,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:30:49,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:30:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:50,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:30:50,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:50,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:30:50,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:50,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:50,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:30:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:30:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:30:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:50,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:50,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:30:50,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-26 23:30:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:30:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:30:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:30:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:50,837 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-10-26 23:30:51,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:30:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:51,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:30:51,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:30:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:30:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:30:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:30:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:30:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:30:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:30:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:30:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3456 backedges. 1069 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:30:53,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789057837] [2020-10-26 23:30:53,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:30:53,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:30:53,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753941449] [2020-10-26 23:30:53,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:30:53,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:30:53,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:30:53,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:30:53,343 INFO L87 Difference]: Start difference. First operand 8903 states and 10405 transitions. Second operand 8 states. [2020-10-26 23:30:53,476 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:30:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:30:57,355 INFO L93 Difference]: Finished difference Result 17990 states and 21018 transitions. [2020-10-26 23:30:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:30:57,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1129 [2020-10-26 23:30:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:30:57,380 INFO L225 Difference]: With dead ends: 17990 [2020-10-26 23:30:57,380 INFO L226 Difference]: Without dead ends: 9089 [2020-10-26 23:30:57,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:30:57,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9089 states. [2020-10-26 23:30:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9089 to 7985. [2020-10-26 23:30:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7985 states. [2020-10-26 23:30:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7985 states to 7985 states and 8754 transitions. [2020-10-26 23:30:57,558 INFO L78 Accepts]: Start accepts. Automaton has 7985 states and 8754 transitions. Word has length 1129 [2020-10-26 23:30:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:30:57,559 INFO L481 AbstractCegarLoop]: Abstraction has 7985 states and 8754 transitions. [2020-10-26 23:30:57,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:30:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7985 states and 8754 transitions. [2020-10-26 23:30:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1257 [2020-10-26 23:30:57,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:30:57,745 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 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, 6, 6, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:30:57,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:30:57,745 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:30:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:30:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1700570056, now seen corresponding path program 1 times [2020-10-26 23:30:57,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:30:57,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509917647] [2020-10-26 23:30:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:30:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:30:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:30:59,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:02,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1286 [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:31:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:31:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:31:03,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:31:03,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:31:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:31:03,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:31:03,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:31:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:31:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:31:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:31:03,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:31:03,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:31:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:31:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:31:03,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:31:03,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:31:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:31:03,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:31:03,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:31:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:31:03,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 23:31:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-26 23:31:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:03,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:03,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:31:03,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:31:03,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:31:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:31:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1044 [2020-10-26 23:31:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:31:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:04,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1156 [2020-10-26 23:31:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:31:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:31:04,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:31:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:31:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4839 backedges. 1586 proven. 211 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-10-26 23:31:05,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509917647] [2020-10-26 23:31:05,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:31:05,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:31:05,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408200063] [2020-10-26 23:31:05,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:31:05,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:31:05,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:31:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:31:05,614 INFO L87 Difference]: Start difference. First operand 7985 states and 8754 transitions. Second operand 10 states. [2020-10-26 23:31:07,319 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-10-26 23:31:07,466 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74