/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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:21:40,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:21:40,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:21:40,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:21:40,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:21:40,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:21:40,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:21:40,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:21:40,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:21:40,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:21:40,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:21:40,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:21:40,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:21:40,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:21:40,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:21:40,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:21:40,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:21:40,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:21:40,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:21:40,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:21:40,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:21:40,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:21:40,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:21:40,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:21:40,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:21:40,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:21:40,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:21:40,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:21:40,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:21:40,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:21:40,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:21:40,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:21:40,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:21:40,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:21:40,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:21:40,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:21:40,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:21:40,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:21:40,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:21:40,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:21:40,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:21:40,204 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 23:21:40,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:21:40,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:21:40,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:21:40,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:21:40,235 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:21:40,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:21:40,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:21:40,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:21:40,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:21:40,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:21:40,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:21:40,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:21:40,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:21:40,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:21:40,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:21:40,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:21:40,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:21:40,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:21:40,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:21:40,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:21:40,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:21:40,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:21:40,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:21:40,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:21:40,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:21:40,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:21:40,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:21:40,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:21:40,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:21:40,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:21:40,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:21:40,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:21:40,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:21:40,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:21:40,717 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:21:40,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09.c [2020-10-26 23:21:40,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cf920e18/ae0ac3d4cda14df0a7b70ee5b5eb288f/FLAGb716b184a [2020-10-26 23:21:41,574 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:21:41,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label09.c [2020-10-26 23:21:41,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cf920e18/ae0ac3d4cda14df0a7b70ee5b5eb288f/FLAGb716b184a [2020-10-26 23:21:41,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7cf920e18/ae0ac3d4cda14df0a7b70ee5b5eb288f [2020-10-26 23:21:41,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:21:41,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:21:41,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:21:41,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:21:41,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:21:41,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:21:41" (1/1) ... [2020-10-26 23:21:41,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@765bed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:41, skipping insertion in model container [2020-10-26 23:21:41,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:21:41" (1/1) ... [2020-10-26 23:21:41,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:21:41,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:21:42,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:21:42,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:21:42,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:21:42,724 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:21:42,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42 WrapperNode [2020-10-26 23:21:42,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:21:42,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:21:42,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:21:42,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:21:42,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (1/1) ... [2020-10-26 23:21:42,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (1/1) ... [2020-10-26 23:21:42,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (1/1) ... [2020-10-26 23:21:42,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (1/1) ... [2020-10-26 23:21:42,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (1/1) ... [2020-10-26 23:21:42,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (1/1) ... [2020-10-26 23:21:42,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (1/1) ... [2020-10-26 23:21:42,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:21:42,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:21:42,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:21:42,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:21:42,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (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 23:21:42,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:21:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:21:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:21:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:21:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:21:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:21:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:21:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:21:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:21:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:21:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:21:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:21:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:21:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:21:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:21:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:21:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:21:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:21:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:21:44,787 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:21:44,788 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:21:44,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:21:44 BoogieIcfgContainer [2020-10-26 23:21:44,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:21:44,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:21:44,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:21:44,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:21:44,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:21:41" (1/3) ... [2020-10-26 23:21:44,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790f67c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:21:44, skipping insertion in model container [2020-10-26 23:21:44,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:21:42" (2/3) ... [2020-10-26 23:21:44,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790f67c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:21:44, skipping insertion in model container [2020-10-26 23:21:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:21:44" (3/3) ... [2020-10-26 23:21:44,800 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label09.c [2020-10-26 23:21:44,814 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:21:44,820 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:21:44,834 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:21:44,866 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:21:44,866 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:21:44,866 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:21:44,866 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:21:44,866 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:21:44,866 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:21:44,867 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:21:44,867 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:21:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:21:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-26 23:21:44,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:44,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:44,902 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1987006792, now seen corresponding path program 1 times [2020-10-26 23:21:44,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:44,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386712745] [2020-10-26 23:21:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:45,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-26 23:21:45,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-26 23:21:45,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:45,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:21:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:21:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 23:21:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:21:45,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:46,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:21:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:21:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:46,037 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 23:21:46,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386712745] [2020-10-26 23:21:46,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:21:46,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:21:46,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242070530] [2020-10-26 23:21:46,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:21:46,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:21:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:21:46,065 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:21:49,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:49,450 INFO L93 Difference]: Finished difference Result 891 states and 1619 transitions. [2020-10-26 23:21:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:21:49,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-26 23:21:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:49,476 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:21:49,476 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:21:49,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:21:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2020-10-26 23:21:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:21:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 907 transitions. [2020-10-26 23:21:49,623 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 907 transitions. Word has length 52 [2020-10-26 23:21:49,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:49,624 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 907 transitions. [2020-10-26 23:21:49,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:21:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 907 transitions. [2020-10-26 23:21:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-26 23:21:49,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:49,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:21:49,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:21:49,642 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1122927756, now seen corresponding path program 1 times [2020-10-26 23:21:49,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:49,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614538610] [2020-10-26 23:21:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:51,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:51,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-26 23:21:51,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:21:51,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-26 23:21:51,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:21:51,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:21:51,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:21:51,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:21:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:51,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:51,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:51,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:21:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:51,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:51,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:21:51,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:21:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:21:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:21:51,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614538610] [2020-10-26 23:21:51,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:21:51,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:21:51,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977926014] [2020-10-26 23:21:51,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:21:51,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:51,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:21:51,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:21:51,539 INFO L87 Difference]: Start difference. First operand 559 states and 907 transitions. Second operand 8 states. [2020-10-26 23:21:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:55,495 INFO L93 Difference]: Finished difference Result 2248 states and 3777 transitions. [2020-10-26 23:21:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:21:55,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-26 23:21:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:55,510 INFO L225 Difference]: With dead ends: 2248 [2020-10-26 23:21:55,510 INFO L226 Difference]: Without dead ends: 1695 [2020-10-26 23:21:55,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:21:55,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2020-10-26 23:21:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1129. [2020-10-26 23:21:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-26 23:21:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1733 transitions. [2020-10-26 23:21:55,614 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1733 transitions. Word has length 121 [2020-10-26 23:21:55,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:55,614 INFO L481 AbstractCegarLoop]: Abstraction has 1129 states and 1733 transitions. [2020-10-26 23:21:55,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:21:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1733 transitions. [2020-10-26 23:21:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-26 23:21:55,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:55,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:21:55,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:21:55,619 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:55,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:55,619 INFO L82 PathProgramCache]: Analyzing trace with hash 69031024, now seen corresponding path program 1 times [2020-10-26 23:21:55,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:55,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393245149] [2020-10-26 23:21:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:55,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:56,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:21:56,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-26 23:21:56,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:21:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:21:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:21:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:56,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:56,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:56,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:56,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:21:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:56,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:57,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:21:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:21:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:57,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:21:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:21:57,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393245149] [2020-10-26 23:21:57,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:57,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:21:57,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768436021] [2020-10-26 23:21:57,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:21:57,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:57,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:21:57,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:21:57,156 INFO L87 Difference]: Start difference. First operand 1129 states and 1733 transitions. Second operand 6 states. [2020-10-26 23:21:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:59,395 INFO L93 Difference]: Finished difference Result 3012 states and 4716 transitions. [2020-10-26 23:21:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:21:59,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-26 23:21:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:59,414 INFO L225 Difference]: With dead ends: 3012 [2020-10-26 23:21:59,414 INFO L226 Difference]: Without dead ends: 1889 [2020-10-26 23:21:59,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:21:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-10-26 23:21:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1507. [2020-10-26 23:21:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-10-26 23:21:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2212 transitions. [2020-10-26 23:21:59,507 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2212 transitions. Word has length 122 [2020-10-26 23:21:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:59,509 INFO L481 AbstractCegarLoop]: Abstraction has 1507 states and 2212 transitions. [2020-10-26 23:21:59,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:21:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2212 transitions. [2020-10-26 23:21:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-26 23:21:59,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:59,518 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:59,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:21:59,518 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:59,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:59,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1515883136, now seen corresponding path program 1 times [2020-10-26 23:21:59,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:59,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194498847] [2020-10-26 23:21:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:59,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:00,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:01,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:04,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:04,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-26 23:22:04,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:22:04,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4815 [2020-10-26 23:22:04,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:04,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:04,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:22:04,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:04,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:04,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:04,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:22:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:04,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:22:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:22:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:22:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-26 23:22:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:04,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:04,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:22:04,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:22:04,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:22:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 88 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:22:04,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194498847] [2020-10-26 23:22:04,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:04,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:04,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362206847] [2020-10-26 23:22:04,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:04,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:04,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:04,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:04,939 INFO L87 Difference]: Start difference. First operand 1507 states and 2212 transitions. Second operand 7 states. [2020-10-26 23:22:07,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:07,420 INFO L93 Difference]: Finished difference Result 3464 states and 5373 transitions. [2020-10-26 23:22:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:22:07,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-26 23:22:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:07,439 INFO L225 Difference]: With dead ends: 3464 [2020-10-26 23:22:07,440 INFO L226 Difference]: Without dead ends: 1963 [2020-10-26 23:22:07,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:22:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2020-10-26 23:22:07,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1881. [2020-10-26 23:22:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-26 23:22:07,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2626 transitions. [2020-10-26 23:22:07,552 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2626 transitions. Word has length 205 [2020-10-26 23:22:07,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:07,554 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2626 transitions. [2020-10-26 23:22:07,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2626 transitions. [2020-10-26 23:22:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-26 23:22:07,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:07,560 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:07,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:22:07,561 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:07,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:07,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1892581748, now seen corresponding path program 1 times [2020-10-26 23:22:07,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:07,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025990085] [2020-10-26 23:22:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:07,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:11,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:12,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:12,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-26 23:22:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 23:22:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:22:12,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:22:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:22:12,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:12,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:12,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:12,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:12,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:22:12,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:12,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:12,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:12,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:12,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:12,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:22:12,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:22:12,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:22:12,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:12,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:22:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:12,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:13,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:13,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:22:13,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 23:22:13,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:13,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:22:13,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-26 23:22:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:13,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:13,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:22:13,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:13,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:22:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:13,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 137 proven. 208 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:22:13,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025990085] [2020-10-26 23:22:13,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:13,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:22:13,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773703869] [2020-10-26 23:22:13,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:22:13,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:13,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:22:13,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:22:13,595 INFO L87 Difference]: Start difference. First operand 1881 states and 2626 transitions. Second operand 8 states. [2020-10-26 23:22:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:16,439 INFO L93 Difference]: Finished difference Result 3846 states and 5726 transitions. [2020-10-26 23:22:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:22:16,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 289 [2020-10-26 23:22:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:16,462 INFO L225 Difference]: With dead ends: 3846 [2020-10-26 23:22:16,462 INFO L226 Difference]: Without dead ends: 2337 [2020-10-26 23:22:16,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:22:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2020-10-26 23:22:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 2261. [2020-10-26 23:22:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2020-10-26 23:22:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3079 transitions. [2020-10-26 23:22:16,576 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3079 transitions. Word has length 289 [2020-10-26 23:22:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:16,576 INFO L481 AbstractCegarLoop]: Abstraction has 2261 states and 3079 transitions. [2020-10-26 23:22:16,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:22:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3079 transitions. [2020-10-26 23:22:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-26 23:22:16,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:16,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:16,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:22:16,586 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:16,587 INFO L82 PathProgramCache]: Analyzing trace with hash -905314544, now seen corresponding path program 1 times [2020-10-26 23:22:16,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:16,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174299550] [2020-10-26 23:22:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:20,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3978 [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:22:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:20,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:20,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:20,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:20,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:20,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:20,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:20,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:22:20,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:22:20,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:22:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:20,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:22:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:20,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:21,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:21,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:22:21,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:21,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-26 23:22:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:21,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:22:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:22:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:21,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:21,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:21,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:22:21,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:21,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:22:21,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:21,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-26 23:22:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 217 proven. 69 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-26 23:22:21,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174299550] [2020-10-26 23:22:21,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:21,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:21,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385084116] [2020-10-26 23:22:21,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:21,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:21,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:21,826 INFO L87 Difference]: Start difference. First operand 2261 states and 3079 transitions. Second operand 7 states. [2020-10-26 23:22:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:23,988 INFO L93 Difference]: Finished difference Result 3909 states and 5543 transitions. [2020-10-26 23:22:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:23,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-26 23:22:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:24,004 INFO L225 Difference]: With dead ends: 3909 [2020-10-26 23:22:24,004 INFO L226 Difference]: Without dead ends: 1899 [2020-10-26 23:22:24,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-10-26 23:22:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1879. [2020-10-26 23:22:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2020-10-26 23:22:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2272 transitions. [2020-10-26 23:22:24,072 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2272 transitions. Word has length 339 [2020-10-26 23:22:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:24,073 INFO L481 AbstractCegarLoop]: Abstraction has 1879 states and 2272 transitions. [2020-10-26 23:22:24,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2272 transitions. [2020-10-26 23:22:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-26 23:22:24,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:24,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:24,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:22:24,080 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:24,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash 271696872, now seen corresponding path program 1 times [2020-10-26 23:22:24,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:24,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715671032] [2020-10-26 23:22:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:24,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:24,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-26 23:22:24,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-26 23:22:24,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:22:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:22:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:24,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:24,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:24,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:24,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:24,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:22:24,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:24,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:24,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:24,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:24,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:24,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:24,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:22:24,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:25,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:25,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:25,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:22:25,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:22:25,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:25,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:25,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:25,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:25,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:25,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:22:25,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:25,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:22:25,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:22:25,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715671032] [2020-10-26 23:22:25,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:25,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:22:25,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128197782] [2020-10-26 23:22:25,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:22:25,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:25,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:22:25,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:22:25,510 INFO L87 Difference]: Start difference. First operand 1879 states and 2272 transitions. Second operand 8 states. [2020-10-26 23:22:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:28,198 INFO L93 Difference]: Finished difference Result 4316 states and 5406 transitions. [2020-10-26 23:22:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:22:28,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 344 [2020-10-26 23:22:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:28,211 INFO L225 Difference]: With dead ends: 4316 [2020-10-26 23:22:28,212 INFO L226 Difference]: Without dead ends: 2809 [2020-10-26 23:22:28,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:22:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2020-10-26 23:22:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2255. [2020-10-26 23:22:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2020-10-26 23:22:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2661 transitions. [2020-10-26 23:22:28,285 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2661 transitions. Word has length 344 [2020-10-26 23:22:28,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:28,286 INFO L481 AbstractCegarLoop]: Abstraction has 2255 states and 2661 transitions. [2020-10-26 23:22:28,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:22:28,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2661 transitions. [2020-10-26 23:22:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-26 23:22:28,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:28,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:28,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:22:28,294 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:28,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:28,295 INFO L82 PathProgramCache]: Analyzing trace with hash 915406000, now seen corresponding path program 1 times [2020-10-26 23:22:28,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:28,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935672518] [2020-10-26 23:22:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:28,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:32,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-26 23:22:32,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:22:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4292 [2020-10-26 23:22:32,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:22:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-26 23:22:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:32,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:32,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:32,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:32,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:32,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:32,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:22:32,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:22:32,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:33,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:33,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:33,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 23:22:33,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:22:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:33,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:33,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:33,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-26 23:22:33,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:33,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:22:33,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:33,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-26 23:22:33,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 432 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-26 23:22:33,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935672518] [2020-10-26 23:22:33,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:33,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:22:33,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186154386] [2020-10-26 23:22:33,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:22:33,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:33,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:22:33,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:22:33,735 INFO L87 Difference]: Start difference. First operand 2255 states and 2661 transitions. Second operand 9 states. [2020-10-26 23:22:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:35,557 INFO L93 Difference]: Finished difference Result 5284 states and 6545 transitions. [2020-10-26 23:22:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:22:35,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 375 [2020-10-26 23:22:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:35,576 INFO L225 Difference]: With dead ends: 5284 [2020-10-26 23:22:35,576 INFO L226 Difference]: Without dead ends: 3401 [2020-10-26 23:22:35,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:22:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2020-10-26 23:22:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3367. [2020-10-26 23:22:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3367 states. [2020-10-26 23:22:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 3896 transitions. [2020-10-26 23:22:35,733 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 3896 transitions. Word has length 375 [2020-10-26 23:22:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:35,735 INFO L481 AbstractCegarLoop]: Abstraction has 3367 states and 3896 transitions. [2020-10-26 23:22:35,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:22:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 3896 transitions. [2020-10-26 23:22:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-26 23:22:35,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:35,748 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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 23:22:35,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:22:35,749 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash -995847920, now seen corresponding path program 2 times [2020-10-26 23:22:35,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:35,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808704590] [2020-10-26 23:22:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-26 23:22:38,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2681 [2020-10-26 23:22:38,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:22:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:22:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:38,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:38,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:38,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:38,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:38,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:38,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:22:38,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:22:38,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:38,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:38,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:22:38,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:22:38,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:22:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:39,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:39,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:39,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:22:39,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:22:39,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:39,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 402 proven. 72 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-26 23:22:39,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808704590] [2020-10-26 23:22:39,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:39,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:39,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022884688] [2020-10-26 23:22:39,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:39,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:39,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:39,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:39,275 INFO L87 Difference]: Start difference. First operand 3367 states and 3896 transitions. Second operand 7 states. [2020-10-26 23:22:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:41,794 INFO L93 Difference]: Finished difference Result 8034 states and 9677 transitions. [2020-10-26 23:22:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:41,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-26 23:22:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:41,819 INFO L225 Difference]: With dead ends: 8034 [2020-10-26 23:22:41,820 INFO L226 Difference]: Without dead ends: 5039 [2020-10-26 23:22:41,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5039 states. [2020-10-26 23:22:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 5033. [2020-10-26 23:22:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5033 states. [2020-10-26 23:22:41,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 6092 transitions. [2020-10-26 23:22:41,983 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 6092 transitions. Word has length 454 [2020-10-26 23:22:41,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:41,984 INFO L481 AbstractCegarLoop]: Abstraction has 5033 states and 6092 transitions. [2020-10-26 23:22:41,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:41,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 6092 transitions. [2020-10-26 23:22:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-26 23:22:41,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:41,999 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:41,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:22:41,999 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:42,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1795097952, now seen corresponding path program 1 times [2020-10-26 23:22:42,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:42,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950373001] [2020-10-26 23:22:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:43,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 520 [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-26 23:22:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:44,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:44,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:44,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:44,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:44,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:44,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:44,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:44,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:44,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:44,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:22:44,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:44,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:22:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:44,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:44,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:22:44,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:44,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:22:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:44,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:22:44,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:22:44,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:44,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:22:44,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 609 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-26 23:22:44,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950373001] [2020-10-26 23:22:44,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:44,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:44,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384286211] [2020-10-26 23:22:44,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:44,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:44,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:44,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:44,793 INFO L87 Difference]: Start difference. First operand 5033 states and 6092 transitions. Second operand 7 states. [2020-10-26 23:22:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:46,975 INFO L93 Difference]: Finished difference Result 11366 states and 13951 transitions. [2020-10-26 23:22:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:22:46,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 502 [2020-10-26 23:22:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:47,015 INFO L225 Difference]: With dead ends: 11366 [2020-10-26 23:22:47,015 INFO L226 Difference]: Without dead ends: 6705 [2020-10-26 23:22:47,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:22:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2020-10-26 23:22:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 6333. [2020-10-26 23:22:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6333 states. [2020-10-26 23:22:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 7463 transitions. [2020-10-26 23:22:47,199 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 7463 transitions. Word has length 502 [2020-10-26 23:22:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:47,201 INFO L481 AbstractCegarLoop]: Abstraction has 6333 states and 7463 transitions. [2020-10-26 23:22:47,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 7463 transitions. [2020-10-26 23:22:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-10-26 23:22:47,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:47,224 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-26 23:22:47,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:22:47,225 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:47,229 INFO L82 PathProgramCache]: Analyzing trace with hash 194413384, now seen corresponding path program 1 times [2020-10-26 23:22:47,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:47,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400852078] [2020-10-26 23:22:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:47,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 681 [2020-10-26 23:22:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-26 23:22:48,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:22:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 23:22:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:48,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:48,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:48,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:48,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:48,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:48,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:48,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:48,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:22:48,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:48,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:48,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:48,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:48,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:48,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:48,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:48,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:48,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:48,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:48,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:48,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:22:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:22:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:22:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:22:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:48,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:48,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:22:48,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:22:48,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:22:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 670 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:22:49,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400852078] [2020-10-26 23:22:49,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:49,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:49,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757476067] [2020-10-26 23:22:49,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:49,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:49,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:49,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:49,188 INFO L87 Difference]: Start difference. First operand 6333 states and 7463 transitions. Second operand 7 states. [2020-10-26 23:22:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:51,328 INFO L93 Difference]: Finished difference Result 14323 states and 17217 transitions. [2020-10-26 23:22:51,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:22:51,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 661 [2020-10-26 23:22:51,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:51,358 INFO L225 Difference]: With dead ends: 14323 [2020-10-26 23:22:51,358 INFO L226 Difference]: Without dead ends: 8362 [2020-10-26 23:22:51,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:22:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8362 states. [2020-10-26 23:22:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8362 to 8347. [2020-10-26 23:22:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8347 states. [2020-10-26 23:22:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 9889 transitions. [2020-10-26 23:22:51,655 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 9889 transitions. Word has length 661 [2020-10-26 23:22:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:51,656 INFO L481 AbstractCegarLoop]: Abstraction has 8347 states and 9889 transitions. [2020-10-26 23:22:51,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 9889 transitions. [2020-10-26 23:22:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2020-10-26 23:22:51,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:51,666 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 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] [2020-10-26 23:22:51,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:22:51,667 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:51,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2122643724, now seen corresponding path program 1 times [2020-10-26 23:22:51,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:51,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707697593] [2020-10-26 23:22:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:56,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-26 23:22:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:56,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:56,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:56,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:56,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:56,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:56,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:56,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:56,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:57,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:57,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:22:57,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:57,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:57,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:57,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:57,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:57,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:22:57,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:22:57,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:57,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:22:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:57,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:22:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:57,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:22:57,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-10-26 23:22:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:57,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:57,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:22:57,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:22:57,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 1057 proven. 290 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-26 23:22:58,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707697593] [2020-10-26 23:22:58,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:58,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:22:58,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811180239] [2020-10-26 23:22:58,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:22:58,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:22:58,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:22:58,609 INFO L87 Difference]: Start difference. First operand 8347 states and 9889 transitions. Second operand 9 states. [2020-10-26 23:23:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:00,613 INFO L93 Difference]: Finished difference Result 16702 states and 19823 transitions. [2020-10-26 23:23:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:00,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 675 [2020-10-26 23:23:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:00,645 INFO L225 Difference]: With dead ends: 16702 [2020-10-26 23:23:00,645 INFO L226 Difference]: Without dead ends: 8727 [2020-10-26 23:23:00,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:23:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8727 states. [2020-10-26 23:23:00,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8727 to 8715. [2020-10-26 23:23:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8715 states. [2020-10-26 23:23:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8715 states to 8715 states and 10261 transitions. [2020-10-26 23:23:00,869 INFO L78 Accepts]: Start accepts. Automaton has 8715 states and 10261 transitions. Word has length 675 [2020-10-26 23:23:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:00,870 INFO L481 AbstractCegarLoop]: Abstraction has 8715 states and 10261 transitions. [2020-10-26 23:23:00,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:23:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8715 states and 10261 transitions. [2020-10-26 23:23:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2020-10-26 23:23:00,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:00,882 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2020-10-26 23:23:00,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:23:00,882 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:00,883 INFO L82 PathProgramCache]: Analyzing trace with hash -940297780, now seen corresponding path program 1 times [2020-10-26 23:23:00,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:00,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395248849] [2020-10-26 23:23:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:01,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:06,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 804 [2020-10-26 23:23:06,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:23:06,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-26 23:23:06,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:23:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:06,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:23:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:06,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:06,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:06,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:23:06,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:06,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:06,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:06,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:06,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:06,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:23:06,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:06,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:06,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:06,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:06,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:23:06,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:06,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:06,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:23:06,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:06,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-26 23:23:06,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:06,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:23:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:23:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:07,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:07,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:07,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 778 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-26 23:23:07,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395248849] [2020-10-26 23:23:07,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:07,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:07,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178561779] [2020-10-26 23:23:07,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:07,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:07,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:07,861 INFO L87 Difference]: Start difference. First operand 8715 states and 10261 transitions. Second operand 7 states. [2020-10-26 23:23:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:10,028 INFO L93 Difference]: Finished difference Result 17809 states and 21057 transitions. [2020-10-26 23:23:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:10,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 782 [2020-10-26 23:23:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:10,059 INFO L225 Difference]: With dead ends: 17809 [2020-10-26 23:23:10,059 INFO L226 Difference]: Without dead ends: 9466 [2020-10-26 23:23:10,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9466 states. [2020-10-26 23:23:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9466 to 9083. [2020-10-26 23:23:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9083 states. [2020-10-26 23:23:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 10647 transitions. [2020-10-26 23:23:10,364 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 10647 transitions. Word has length 782 [2020-10-26 23:23:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:10,366 INFO L481 AbstractCegarLoop]: Abstraction has 9083 states and 10647 transitions. [2020-10-26 23:23:10,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 10647 transitions. [2020-10-26 23:23:10,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-26 23:23:10,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:10,379 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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 23:23:10,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:23:10,379 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:10,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:10,380 INFO L82 PathProgramCache]: Analyzing trace with hash -9378368, now seen corresponding path program 1 times [2020-10-26 23:23:10,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:10,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406405872] [2020-10-26 23:23:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-26 23:23:11,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-26 23:23:11,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:23:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:23:11,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:23:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:11,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:23:11,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:11,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:11,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:12,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:12,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:12,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:23:12,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:12,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:12,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:12,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:12,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:23:12,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-26 23:23:12,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:23:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:12,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:23:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:12,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 634 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:23:12,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406405872] [2020-10-26 23:23:12,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:12,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:12,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127350021] [2020-10-26 23:23:12,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:12,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:12,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:12,959 INFO L87 Difference]: Start difference. First operand 9083 states and 10647 transitions. Second operand 7 states. [2020-10-26 23:23:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:15,334 INFO L93 Difference]: Finished difference Result 17804 states and 20927 transitions. [2020-10-26 23:23:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:23:15,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 793 [2020-10-26 23:23:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:15,365 INFO L225 Difference]: With dead ends: 17804 [2020-10-26 23:23:15,365 INFO L226 Difference]: Without dead ends: 9093 [2020-10-26 23:23:15,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9093 states. [2020-10-26 23:23:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9093 to 9083. [2020-10-26 23:23:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9083 states. [2020-10-26 23:23:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 10639 transitions. [2020-10-26 23:23:15,619 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 10639 transitions. Word has length 793 [2020-10-26 23:23:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:15,620 INFO L481 AbstractCegarLoop]: Abstraction has 9083 states and 10639 transitions. [2020-10-26 23:23:15,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 10639 transitions. [2020-10-26 23:23:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-26 23:23:15,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:15,636 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:15,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:23:15,636 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:15,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1556447776, now seen corresponding path program 1 times [2020-10-26 23:23:15,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:15,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759837688] [2020-10-26 23:23:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 23:23:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:18,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:18,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:23:18,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:18,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:18,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:18,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:18,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:18,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:23:18,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:18,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:18,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:18,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:23:18,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:18,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:23:19,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:23:19,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:19,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:23:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:23:19,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:23:19,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:19,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:23:19,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:23:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:23:19,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:23:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:23:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-26 23:23:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 1076 proven. 6 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2020-10-26 23:23:19,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759837688] [2020-10-26 23:23:19,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:19,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:19,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069883903] [2020-10-26 23:23:19,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:19,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:19,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:19,806 INFO L87 Difference]: Start difference. First operand 9083 states and 10639 transitions. Second operand 7 states. [2020-10-26 23:23:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:22,831 INFO L93 Difference]: Finished difference Result 19099 states and 22479 transitions. [2020-10-26 23:23:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:22,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 800 [2020-10-26 23:23:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:22,862 INFO L225 Difference]: With dead ends: 19099 [2020-10-26 23:23:22,862 INFO L226 Difference]: Without dead ends: 10388 [2020-10-26 23:23:22,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10388 states. [2020-10-26 23:23:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10388 to 10373. [2020-10-26 23:23:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10373 states. [2020-10-26 23:23:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10373 states to 10373 states and 12133 transitions. [2020-10-26 23:23:23,107 INFO L78 Accepts]: Start accepts. Automaton has 10373 states and 12133 transitions. Word has length 800 [2020-10-26 23:23:23,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:23,108 INFO L481 AbstractCegarLoop]: Abstraction has 10373 states and 12133 transitions. [2020-10-26 23:23:23,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10373 states and 12133 transitions. [2020-10-26 23:23:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-26 23:23:23,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:23,121 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:23,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:23:23,121 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:23,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:23,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1210272652, now seen corresponding path program 1 times [2020-10-26 23:23:23,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:23,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955178542] [2020-10-26 23:23:23,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:24,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:28,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:23:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:28,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:28,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:28,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:28,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:28,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:23:28,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:28,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:23:28,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:28,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:23:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:28,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:23:28,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:23:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2020-10-26 23:23:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:29,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:23:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:29,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2020-10-26 23:23:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:29,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:29,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 1102 proven. 144 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2020-10-26 23:23:29,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955178542] [2020-10-26 23:23:29,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:29,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:29,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061398819] [2020-10-26 23:23:29,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:29,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:29,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:29,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:29,523 INFO L87 Difference]: Start difference. First operand 10373 states and 12133 transitions. Second operand 7 states. [2020-10-26 23:23:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:32,675 INFO L93 Difference]: Finished difference Result 21855 states and 25767 transitions. [2020-10-26 23:23:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:32,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 818 [2020-10-26 23:23:32,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:32,711 INFO L225 Difference]: With dead ends: 21855 [2020-10-26 23:23:32,711 INFO L226 Difference]: Without dead ends: 11854 [2020-10-26 23:23:32,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:32,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11854 states. [2020-10-26 23:23:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11854 to 11661. [2020-10-26 23:23:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11661 states. [2020-10-26 23:23:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11661 states to 11661 states and 13636 transitions. [2020-10-26 23:23:33,001 INFO L78 Accepts]: Start accepts. Automaton has 11661 states and 13636 transitions. Word has length 818 [2020-10-26 23:23:33,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:33,002 INFO L481 AbstractCegarLoop]: Abstraction has 11661 states and 13636 transitions. [2020-10-26 23:23:33,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:33,002 INFO L276 IsEmpty]: Start isEmpty. Operand 11661 states and 13636 transitions. [2020-10-26 23:23:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-26 23:23:33,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:33,015 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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 23:23:33,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:23:33,016 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:33,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:33,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1721069892, now seen corresponding path program 1 times [2020-10-26 23:23:33,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:33,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256897296] [2020-10-26 23:23:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:34,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 860 [2020-10-26 23:23:36,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2921 [2020-10-26 23:23:36,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:23:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:23:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:23:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:36,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:23:36,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:36,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:23:36,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:23:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:23:36,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:23:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:23:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:23:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:23:36,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:23:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:23:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:23:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 872 proven. 49 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-26 23:23:37,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256897296] [2020-10-26 23:23:37,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:37,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:23:37,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318625858] [2020-10-26 23:23:37,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:23:37,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:37,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:23:37,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:23:37,191 INFO L87 Difference]: Start difference. First operand 11661 states and 13636 transitions. Second operand 8 states. [2020-10-26 23:23:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:40,308 INFO L93 Difference]: Finished difference Result 25366 states and 29994 transitions. [2020-10-26 23:23:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:23:40,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 836 [2020-10-26 23:23:40,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:40,346 INFO L225 Difference]: With dead ends: 25366 [2020-10-26 23:23:40,346 INFO L226 Difference]: Without dead ends: 14077 [2020-10-26 23:23:40,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:23:40,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14077 states. [2020-10-26 23:23:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14077 to 13699. [2020-10-26 23:23:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13699 states. [2020-10-26 23:23:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13699 states to 13699 states and 16017 transitions. [2020-10-26 23:23:40,683 INFO L78 Accepts]: Start accepts. Automaton has 13699 states and 16017 transitions. Word has length 836 [2020-10-26 23:23:40,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:40,684 INFO L481 AbstractCegarLoop]: Abstraction has 13699 states and 16017 transitions. [2020-10-26 23:23:40,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:23:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 13699 states and 16017 transitions. [2020-10-26 23:23:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-26 23:23:40,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:40,698 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 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] [2020-10-26 23:23:40,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:23:40,699 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:40,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:40,699 INFO L82 PathProgramCache]: Analyzing trace with hash -326960396, now seen corresponding path program 1 times [2020-10-26 23:23:40,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:40,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12641502] [2020-10-26 23:23:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:40,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:43,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:45,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 905 [2020-10-26 23:23:45,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:23:45,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:23:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:23:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:46,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:46,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:23:46,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:23:46,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:46,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:23:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:23:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:23:46,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:23:46,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:23:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:23:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:23:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:23:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:46,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:23:46,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:23:46,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2313 backedges. 912 proven. 72 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2020-10-26 23:23:47,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12641502] [2020-10-26 23:23:47,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:47,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:47,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957227719] [2020-10-26 23:23:47,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:47,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:47,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:47,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:47,382 INFO L87 Difference]: Start difference. First operand 13699 states and 16017 transitions. Second operand 7 states. [2020-10-26 23:23:49,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:49,691 INFO L93 Difference]: Finished difference Result 27048 states and 31672 transitions. [2020-10-26 23:23:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:23:49,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 881 [2020-10-26 23:23:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:49,728 INFO L225 Difference]: With dead ends: 27048 [2020-10-26 23:23:49,728 INFO L226 Difference]: Without dead ends: 13721 [2020-10-26 23:23:49,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:23:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2020-10-26 23:23:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 13705. [2020-10-26 23:23:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13705 states. [2020-10-26 23:23:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13705 states to 13705 states and 15795 transitions. [2020-10-26 23:23:50,066 INFO L78 Accepts]: Start accepts. Automaton has 13705 states and 15795 transitions. Word has length 881 [2020-10-26 23:23:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:50,067 INFO L481 AbstractCegarLoop]: Abstraction has 13705 states and 15795 transitions. [2020-10-26 23:23:50,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:50,067 INFO L276 IsEmpty]: Start isEmpty. Operand 13705 states and 15795 transitions. [2020-10-26 23:23:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-26 23:23:50,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:50,083 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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] [2020-10-26 23:23:50,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:23:50,084 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:50,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1068747440, now seen corresponding path program 1 times [2020-10-26 23:23:50,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:50,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859065631] [2020-10-26 23:23:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:53,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:53,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 979 [2020-10-26 23:23:53,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3662 [2020-10-26 23:23:53,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:23:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:23:53,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:53,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:23:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:54,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:54,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:23:54,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:54,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:54,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:54,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:23:54,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:23:54,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:23:54,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:23:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:23:54,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:23:54,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:54,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:23:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:23:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:55,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:55,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:23:55,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:23:55,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:23:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:23:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2562 backedges. 720 proven. 35 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2020-10-26 23:23:56,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859065631] [2020-10-26 23:23:56,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:56,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:23:56,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569372345] [2020-10-26 23:23:56,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:23:56,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:23:56,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:23:56,149 INFO L87 Difference]: Start difference. First operand 13705 states and 15795 transitions. Second operand 8 states. [2020-10-26 23:23:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:58,941 INFO L93 Difference]: Finished difference Result 28362 states and 32984 transitions. [2020-10-26 23:23:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:58,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 955 [2020-10-26 23:23:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:58,978 INFO L225 Difference]: With dead ends: 28362 [2020-10-26 23:23:58,978 INFO L226 Difference]: Without dead ends: 14819 [2020-10-26 23:23:58,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14819 states. [2020-10-26 23:23:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14819 to 14619. [2020-10-26 23:23:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14619 states. [2020-10-26 23:23:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14619 states to 14619 states and 16860 transitions. [2020-10-26 23:23:59,315 INFO L78 Accepts]: Start accepts. Automaton has 14619 states and 16860 transitions. Word has length 955 [2020-10-26 23:23:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:59,317 INFO L481 AbstractCegarLoop]: Abstraction has 14619 states and 16860 transitions. [2020-10-26 23:23:59,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:23:59,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14619 states and 16860 transitions. [2020-10-26 23:23:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2020-10-26 23:23:59,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:59,332 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, 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, 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, 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 23:23:59,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:23:59,332 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1166150780, now seen corresponding path program 1 times [2020-10-26 23:23:59,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:59,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26792152] [2020-10-26 23:23:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:59,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3163 [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:24:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:02,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:02,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:02,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:02,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:02,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:02,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:02,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:24:02,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:02,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:02,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:24:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:03,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:24:03,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:03,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:24:03,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:03,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:03,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:24:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:24:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 23:24:03,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:24:03,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:24:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3062 backedges. 1033 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-26 23:24:04,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26792152] [2020-10-26 23:24:04,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:04,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:04,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330813641] [2020-10-26 23:24:04,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:04,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:04,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:04,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:04,532 INFO L87 Difference]: Start difference. First operand 14619 states and 16860 transitions. Second operand 7 states. [2020-10-26 23:24:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:07,123 INFO L93 Difference]: Finished difference Result 29094 states and 33574 transitions. [2020-10-26 23:24:07,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:24:07,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1004 [2020-10-26 23:24:07,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:07,159 INFO L225 Difference]: With dead ends: 29094 [2020-10-26 23:24:07,159 INFO L226 Difference]: Without dead ends: 14847 [2020-10-26 23:24:07,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:24:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14847 states. [2020-10-26 23:24:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14847 to 14085. [2020-10-26 23:24:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14085 states. [2020-10-26 23:24:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14085 states to 14085 states and 16046 transitions. [2020-10-26 23:24:07,482 INFO L78 Accepts]: Start accepts. Automaton has 14085 states and 16046 transitions. Word has length 1004 [2020-10-26 23:24:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:07,483 INFO L481 AbstractCegarLoop]: Abstraction has 14085 states and 16046 transitions. [2020-10-26 23:24:07,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 14085 states and 16046 transitions. [2020-10-26 23:24:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2020-10-26 23:24:07,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:07,502 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-26 23:24:07,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:24:07,503 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash -584456228, now seen corresponding path program 1 times [2020-10-26 23:24:07,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:07,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804312069] [2020-10-26 23:24:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-26 23:24:11,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3452 [2020-10-26 23:24:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:24:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-26 23:24:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 23:24:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:11,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:11,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:11,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:24:11,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:11,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:11,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:24:11,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:11,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:11,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:11,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:11,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:11,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:24:11,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:24:11,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:24:11,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:11,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:11,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:24:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:11,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:11,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:24:11,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:24:11,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:24:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:12,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:12,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:24:12,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:24:12,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 23:24:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-26 23:24:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:12,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:12,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:12,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:24:12,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:24:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3414 backedges. 824 proven. 50 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2020-10-26 23:24:13,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804312069] [2020-10-26 23:24:13,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:13,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:24:13,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674588845] [2020-10-26 23:24:13,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:24:13,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:13,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:24:13,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:24:13,028 INFO L87 Difference]: Start difference. First operand 14085 states and 16046 transitions. Second operand 8 states. [2020-10-26 23:24:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:16,050 INFO L93 Difference]: Finished difference Result 30412 states and 34912 transitions. [2020-10-26 23:24:16,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:24:16,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1088 [2020-10-26 23:24:16,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:16,081 INFO L225 Difference]: With dead ends: 30412 [2020-10-26 23:24:16,082 INFO L226 Difference]: Without dead ends: 16699 [2020-10-26 23:24:16,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:24:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16699 states. [2020-10-26 23:24:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16699 to 16129. [2020-10-26 23:24:16,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16129 states. [2020-10-26 23:24:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 18318 transitions. [2020-10-26 23:24:16,396 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 18318 transitions. Word has length 1088 [2020-10-26 23:24:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:16,397 INFO L481 AbstractCegarLoop]: Abstraction has 16129 states and 18318 transitions. [2020-10-26 23:24:16,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:24:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 18318 transitions. [2020-10-26 23:24:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1123 [2020-10-26 23:24:16,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:16,416 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, 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, 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, 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 23:24:16,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:24:16,416 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:16,417 INFO L82 PathProgramCache]: Analyzing trace with hash 819457212, now seen corresponding path program 1 times [2020-10-26 23:24:16,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:16,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013725517] [2020-10-26 23:24:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1150 [2020-10-26 23:24:21,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-26 23:24:21,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:24:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 407 [2020-10-26 23:24:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:21,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:24:21,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:21,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:21,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:21,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:21,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:21,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:22,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:22,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:22,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:22,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:22,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:24:22,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:24:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:24:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:24:22,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:24:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 23:24:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:24:22,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:24:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3938 backedges. 2245 proven. 204 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2020-10-26 23:24:23,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013725517] [2020-10-26 23:24:23,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:23,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:24:23,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828373808] [2020-10-26 23:24:23,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:24:23,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:23,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:24:23,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:24:23,914 INFO L87 Difference]: Start difference. First operand 16129 states and 18318 transitions. Second operand 10 states. [2020-10-26 23:24:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:27,855 INFO L93 Difference]: Finished difference Result 32650 states and 37118 transitions. [2020-10-26 23:24:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:24:27,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1122 [2020-10-26 23:24:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:27,889 INFO L225 Difference]: With dead ends: 32650 [2020-10-26 23:24:27,889 INFO L226 Difference]: Without dead ends: 16893 [2020-10-26 23:24:27,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:24:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16893 states. [2020-10-26 23:24:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16893 to 16681. [2020-10-26 23:24:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16681 states. [2020-10-26 23:24:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16681 states to 16681 states and 18899 transitions. [2020-10-26 23:24:28,204 INFO L78 Accepts]: Start accepts. Automaton has 16681 states and 18899 transitions. Word has length 1122 [2020-10-26 23:24:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:28,205 INFO L481 AbstractCegarLoop]: Abstraction has 16681 states and 18899 transitions. [2020-10-26 23:24:28,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:24:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 16681 states and 18899 transitions. [2020-10-26 23:24:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2020-10-26 23:24:28,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:28,228 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, 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, 9, 9, 9, 9, 9, 8, 8, 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, 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, 1] [2020-10-26 23:24:28,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:24:28,228 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2018557420, now seen corresponding path program 1 times [2020-10-26 23:24:28,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:28,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129904217] [2020-10-26 23:24:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1235 [2020-10-26 23:24:33,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:33,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:24:33,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:24:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:33,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:24:33,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:33,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:24:33,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:33,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:33,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:33,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:33,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:33,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:33,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:33,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:24:33,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:33,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:33,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:24:33,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:33,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:33,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:33,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:33,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:24:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:24:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:34,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:34,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:24:34,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:24:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:24:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:24:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:24:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1058 [2020-10-26 23:24:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:24:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 2352 proven. 440 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2020-10-26 23:24:36,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129904217] [2020-10-26 23:24:36,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:36,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:24:36,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524678307] [2020-10-26 23:24:36,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:24:36,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:36,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:24:36,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:24:36,093 INFO L87 Difference]: Start difference. First operand 16681 states and 18899 transitions. Second operand 11 states. [2020-10-26 23:24:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:40,526 INFO L93 Difference]: Finished difference Result 33202 states and 37673 transitions. [2020-10-26 23:24:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 23:24:40,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1205 [2020-10-26 23:24:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:40,553 INFO L225 Difference]: With dead ends: 33202 [2020-10-26 23:24:40,553 INFO L226 Difference]: Without dead ends: 16893 [2020-10-26 23:24:40,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:24:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16893 states. [2020-10-26 23:24:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16893 to 16681. [2020-10-26 23:24:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16681 states. [2020-10-26 23:24:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16681 states to 16681 states and 18887 transitions. [2020-10-26 23:24:40,822 INFO L78 Accepts]: Start accepts. Automaton has 16681 states and 18887 transitions. Word has length 1205 [2020-10-26 23:24:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:40,823 INFO L481 AbstractCegarLoop]: Abstraction has 16681 states and 18887 transitions. [2020-10-26 23:24:40,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:24:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 16681 states and 18887 transitions. [2020-10-26 23:24:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2020-10-26 23:24:40,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:40,847 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, 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, 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, 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, 3, 3, 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 23:24:40,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:24:40,848 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:40,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1368732852, now seen corresponding path program 1 times [2020-10-26 23:24:40,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:40,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719354729] [2020-10-26 23:24:40,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1304 [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:24:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:46,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:24:46,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:46,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:46,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:46,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:24:46,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:46,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:46,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:46,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:46,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:24:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:24:46,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:24:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:46,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:24:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 23:24:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-26 23:24:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:24:46,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:46,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1044 [2020-10-26 23:24:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:46,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:46,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:24:46,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:24:46,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:24:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:47,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1127 [2020-10-26 23:24:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:47,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:47,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-26 23:24:47,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:24:47,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:24:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:47,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5033 backedges. 1568 proven. 220 refuted. 0 times theorem prover too weak. 3245 trivial. 0 not checked. [2020-10-26 23:24:48,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719354729] [2020-10-26 23:24:48,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:48,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:24:48,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466307757] [2020-10-26 23:24:48,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:24:48,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:48,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:24:48,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:24:48,706 INFO L87 Difference]: Start difference. First operand 16681 states and 18887 transitions. Second operand 10 states. [2020-10-26 23:24:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:52,812 INFO L93 Difference]: Finished difference Result 34725 states and 39444 transitions. [2020-10-26 23:24:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:24:52,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1274 [2020-10-26 23:24:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:52,848 INFO L225 Difference]: With dead ends: 34725 [2020-10-26 23:24:52,848 INFO L226 Difference]: Without dead ends: 18379 [2020-10-26 23:24:52,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2020-10-26 23:24:52,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18379 states. [2020-10-26 23:24:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18379 to 17977. [2020-10-26 23:24:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17977 states. [2020-10-26 23:24:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17977 states to 17977 states and 20426 transitions. [2020-10-26 23:24:53,154 INFO L78 Accepts]: Start accepts. Automaton has 17977 states and 20426 transitions. Word has length 1274 [2020-10-26 23:24:53,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:53,155 INFO L481 AbstractCegarLoop]: Abstraction has 17977 states and 20426 transitions. [2020-10-26 23:24:53,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:24:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 17977 states and 20426 transitions. [2020-10-26 23:24:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1283 [2020-10-26 23:24:53,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:53,173 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, 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, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:53,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 23:24:53,173 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash 620581300, now seen corresponding path program 1 times [2020-10-26 23:24:53,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:53,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373600980] [2020-10-26 23:24:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:53,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking...