/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/Problem18_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:35:33,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:35:33,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:35:33,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:35:33,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:35:33,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:35:33,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:35:33,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:35:33,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:35:33,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:35:33,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:35:33,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:35:33,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:35:33,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:35:33,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:35:33,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:35:33,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:35:33,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:35:33,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:35:33,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:35:33,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:35:33,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:35:33,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:35:33,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:35:33,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:35:33,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:35:33,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:35:33,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:35:33,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:35:33,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:35:33,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:35:33,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:35:33,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:35:33,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:35:33,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:35:33,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:35:33,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:35:33,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:35:33,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:35:33,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:35:33,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:35:33,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:35:33,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:35:33,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:35:33,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:35:33,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:35:33,328 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:35:33,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:35:33,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:35:33,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:35:33,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:35:33,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:35:33,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:35:33,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:35:33,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:35:33,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:35:33,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:35:33,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:35:33,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:35:33,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:35:33,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:35:33,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:35:33,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:35:33,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:35:33,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:35:33,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:35:33,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:35:33,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:35:33,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:35:33,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:35:33,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:35:33,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:35:33,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:35:33,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:35:33,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:35:33,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:35:33,810 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:35:33,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label53.c [2020-10-27 00:35:33,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26f173b2/05a51e8476f645fd9b0a9460db5c028f/FLAG35db9f9cc [2020-10-27 00:35:34,934 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:35:34,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label53.c [2020-10-27 00:35:34,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26f173b2/05a51e8476f645fd9b0a9460db5c028f/FLAG35db9f9cc [2020-10-27 00:35:35,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f26f173b2/05a51e8476f645fd9b0a9460db5c028f [2020-10-27 00:35:35,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:35:35,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:35:35,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:35:35,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:35:35,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:35:35,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:35" (1/1) ... [2020-10-27 00:35:35,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c25aa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:35, skipping insertion in model container [2020-10-27 00:35:35,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:35" (1/1) ... [2020-10-27 00:35:35,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:35:35,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:35:36,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:35:36,784 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:35:37,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:35:37,367 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:35:37,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37 WrapperNode [2020-10-27 00:35:37,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:35:37,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:35:37,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:35:37,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:35:37,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... [2020-10-27 00:35:37,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... [2020-10-27 00:35:37,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... [2020-10-27 00:35:37,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... [2020-10-27 00:35:37,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... [2020-10-27 00:35:37,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... [2020-10-27 00:35:37,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... [2020-10-27 00:35:37,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:35:37,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:35:37,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:35:37,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:35:37,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:35:37,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:35:37,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:35:37,773 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:35:37,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:35:37,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:35:37,773 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:35:37,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:35:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:35:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:35:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:35:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:35:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:35:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:35:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:35:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:35:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:35:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:35:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:35:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:35:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:35:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:35:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:35:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:35:42,064 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:35:42,064 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:35:42,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:42 BoogieIcfgContainer [2020-10-27 00:35:42,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:35:42,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:35:42,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:35:42,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:35:42,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:35:35" (1/3) ... [2020-10-27 00:35:42,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c52af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:42, skipping insertion in model container [2020-10-27 00:35:42,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37" (2/3) ... [2020-10-27 00:35:42,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c52af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:42, skipping insertion in model container [2020-10-27 00:35:42,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:42" (3/3) ... [2020-10-27 00:35:42,083 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label53.c [2020-10-27 00:35:42,096 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:35:42,102 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:35:42,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:35:42,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:35:42,167 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:35:42,167 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:35:42,167 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:35:42,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:35:42,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:35:42,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:35:42,168 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:35:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:35:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-27 00:35:42,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:42,227 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] [2020-10-27 00:35:42,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:42,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1440945704, now seen corresponding path program 1 times [2020-10-27 00:35:42,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:42,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615345602] [2020-10-27 00:35:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:43,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:43,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 00:35:43,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:43,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-27 00:35:43,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:35:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:35:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 00:35:43,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:35:43,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:43,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:43,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:43,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:35:43,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:43,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:35:43,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:35:43,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615345602] [2020-10-27 00:35:43,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:35:43,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:35:43,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585391481] [2020-10-27 00:35:43,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:35:43,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:43,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:35:43,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:35:43,274 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:36:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:02,248 INFO L93 Difference]: Finished difference Result 2989 states and 5774 transitions. [2020-10-27 00:36:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:36:02,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-27 00:36:02,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:02,287 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:36:02,287 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:36:02,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:36:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2139. [2020-10-27 00:36:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-10-27 00:36:02,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3438 transitions. [2020-10-27 00:36:02,507 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3438 transitions. Word has length 40 [2020-10-27 00:36:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:02,509 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3438 transitions. [2020-10-27 00:36:02,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:36:02,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3438 transitions. [2020-10-27 00:36:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 00:36:02,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:02,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:02,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:36:02,525 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1964509506, now seen corresponding path program 1 times [2020-10-27 00:36:02,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:02,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907981768] [2020-10-27 00:36:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:03,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 00:36:03,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-27 00:36:03,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 00:36:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:03,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:03,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:36:03,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:36:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:04,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:04,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:36:04,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:04,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 00:36:04,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 00:36:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:04,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907981768] [2020-10-27 00:36:04,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:04,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:36:04,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608328217] [2020-10-27 00:36:04,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:36:04,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:04,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:36:04,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:36:04,171 INFO L87 Difference]: Start difference. First operand 2139 states and 3438 transitions. Second operand 8 states. [2020-10-27 00:36:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:25,901 INFO L93 Difference]: Finished difference Result 8586 states and 14036 transitions. [2020-10-27 00:36:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:36:25,902 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-27 00:36:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:25,942 INFO L225 Difference]: With dead ends: 8586 [2020-10-27 00:36:25,942 INFO L226 Difference]: Without dead ends: 6453 [2020-10-27 00:36:25,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:36:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2020-10-27 00:36:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6449. [2020-10-27 00:36:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6449 states. [2020-10-27 00:36:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6449 states to 6449 states and 9589 transitions. [2020-10-27 00:36:26,201 INFO L78 Accepts]: Start accepts. Automaton has 6449 states and 9589 transitions. Word has length 113 [2020-10-27 00:36:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:26,202 INFO L481 AbstractCegarLoop]: Abstraction has 6449 states and 9589 transitions. [2020-10-27 00:36:26,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:36:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 6449 states and 9589 transitions. [2020-10-27 00:36:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 00:36:26,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:26,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:26,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:36:26,207 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:26,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1817231828, now seen corresponding path program 1 times [2020-10-27 00:36:26,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:26,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311218748] [2020-10-27 00:36:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:26,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:26,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:27,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:27,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 00:36:27,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:36:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1417 [2020-10-27 00:36:27,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 00:36:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:27,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:27,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:27,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:36:27,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:28,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:36:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 00:36:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 00:36:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:28,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311218748] [2020-10-27 00:36:28,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:28,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:36:28,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862357285] [2020-10-27 00:36:28,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:28,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:28,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:28,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:28,107 INFO L87 Difference]: Start difference. First operand 6449 states and 9589 transitions. Second operand 7 states. [2020-10-27 00:36:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:43,246 INFO L93 Difference]: Finished difference Result 19515 states and 29791 transitions. [2020-10-27 00:36:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:36:43,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-27 00:36:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:43,316 INFO L225 Difference]: With dead ends: 19515 [2020-10-27 00:36:43,317 INFO L226 Difference]: Without dead ends: 13072 [2020-10-27 00:36:43,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:36:43,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13072 states. [2020-10-27 00:36:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13072 to 9457. [2020-10-27 00:36:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9457 states. [2020-10-27 00:36:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9457 states to 9457 states and 13387 transitions. [2020-10-27 00:36:43,701 INFO L78 Accepts]: Start accepts. Automaton has 9457 states and 13387 transitions. Word has length 128 [2020-10-27 00:36:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:43,704 INFO L481 AbstractCegarLoop]: Abstraction has 9457 states and 13387 transitions. [2020-10-27 00:36:43,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9457 states and 13387 transitions. [2020-10-27 00:36:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 00:36:43,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:43,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:43,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:36:43,714 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:43,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1973376158, now seen corresponding path program 1 times [2020-10-27 00:36:43,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:43,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105668468] [2020-10-27 00:36:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:43,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:44,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:44,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 00:36:44,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:44,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-27 00:36:44,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:36:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:44,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:44,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:44,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:44,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:36:44,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:44,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:44,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:44,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:44,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:44,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:36:44,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:44,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 00:36:44,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:44,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 00:36:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:45,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105668468] [2020-10-27 00:36:45,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:45,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:36:45,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322187322] [2020-10-27 00:36:45,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:36:45,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:45,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:36:45,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:36:45,059 INFO L87 Difference]: Start difference. First operand 9457 states and 13387 transitions. Second operand 8 states. [2020-10-27 00:36:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:57,854 INFO L93 Difference]: Finished difference Result 21136 states and 29583 transitions. [2020-10-27 00:36:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:36:57,856 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-27 00:36:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:57,903 INFO L225 Difference]: With dead ends: 21136 [2020-10-27 00:36:57,903 INFO L226 Difference]: Without dead ends: 11685 [2020-10-27 00:36:57,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:36:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11685 states. [2020-10-27 00:36:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11685 to 11646. [2020-10-27 00:36:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11646 states. [2020-10-27 00:36:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11646 states to 11646 states and 15476 transitions. [2020-10-27 00:36:58,242 INFO L78 Accepts]: Start accepts. Automaton has 11646 states and 15476 transitions. Word has length 129 [2020-10-27 00:36:58,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:58,243 INFO L481 AbstractCegarLoop]: Abstraction has 11646 states and 15476 transitions. [2020-10-27 00:36:58,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:36:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 11646 states and 15476 transitions. [2020-10-27 00:36:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 00:36:58,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:58,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:58,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:36:58,247 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:58,248 INFO L82 PathProgramCache]: Analyzing trace with hash 71010984, now seen corresponding path program 1 times [2020-10-27 00:36:58,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:58,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252090014] [2020-10-27 00:36:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:59,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:59,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 00:36:59,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-10-27 00:36:59,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:36:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:59,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:59,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:59,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:36:59,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:59,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:00,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:00,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:00,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:00,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-27 00:37:00,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:00,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:37:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:37:00,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252090014] [2020-10-27 00:37:00,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:37:00,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:37:00,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130371163] [2020-10-27 00:37:00,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:00,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:00,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:00,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:00,567 INFO L87 Difference]: Start difference. First operand 11646 states and 15476 transitions. Second operand 7 states. [2020-10-27 00:37:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:12,609 INFO L93 Difference]: Finished difference Result 24914 states and 33064 transitions. [2020-10-27 00:37:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:37:12,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-27 00:37:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:12,658 INFO L225 Difference]: With dead ends: 24914 [2020-10-27 00:37:12,659 INFO L226 Difference]: Without dead ends: 13274 [2020-10-27 00:37:12,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:37:12,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13274 states. [2020-10-27 00:37:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13274 to 13151. [2020-10-27 00:37:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13151 states. [2020-10-27 00:37:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13151 states to 13151 states and 17139 transitions. [2020-10-27 00:37:13,065 INFO L78 Accepts]: Start accepts. Automaton has 13151 states and 17139 transitions. Word has length 162 [2020-10-27 00:37:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:13,065 INFO L481 AbstractCegarLoop]: Abstraction has 13151 states and 17139 transitions. [2020-10-27 00:37:13,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 13151 states and 17139 transitions. [2020-10-27 00:37:13,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-27 00:37:13,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:13,073 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:13,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:37:13,074 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:13,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:13,075 INFO L82 PathProgramCache]: Analyzing trace with hash -448063832, now seen corresponding path program 1 times [2020-10-27 00:37:13,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:13,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214360282] [2020-10-27 00:37:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:13,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:15,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:15,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-27 00:37:15,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:37:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2435 [2020-10-27 00:37:15,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:37:15,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:37:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:15,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:15,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:37:15,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:15,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:15,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:15,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:37:15,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:15,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 00:37:15,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:37:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:16,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:37:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:16,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:16,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:16,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-27 00:37:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:37:16,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214360282] [2020-10-27 00:37:16,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:16,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:16,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585358952] [2020-10-27 00:37:16,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:16,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:16,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:16,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:16,760 INFO L87 Difference]: Start difference. First operand 13151 states and 17139 transitions. Second operand 7 states. [2020-10-27 00:37:29,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:29,230 INFO L93 Difference]: Finished difference Result 25132 states and 33412 transitions. [2020-10-27 00:37:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:29,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 348 [2020-10-27 00:37:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:29,283 INFO L225 Difference]: With dead ends: 25132 [2020-10-27 00:37:29,283 INFO L226 Difference]: Without dead ends: 13266 [2020-10-27 00:37:29,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:37:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13266 states. [2020-10-27 00:37:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13266 to 13196. [2020-10-27 00:37:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13196 states. [2020-10-27 00:37:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13196 states to 13196 states and 15863 transitions. [2020-10-27 00:37:29,626 INFO L78 Accepts]: Start accepts. Automaton has 13196 states and 15863 transitions. Word has length 348 [2020-10-27 00:37:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:29,627 INFO L481 AbstractCegarLoop]: Abstraction has 13196 states and 15863 transitions. [2020-10-27 00:37:29,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13196 states and 15863 transitions. [2020-10-27 00:37:29,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-27 00:37:29,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:29,666 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:29,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:37:29,666 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:29,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:29,669 INFO L82 PathProgramCache]: Analyzing trace with hash 467476378, now seen corresponding path program 1 times [2020-10-27 00:37:29,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:29,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104554934] [2020-10-27 00:37:29,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:35,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-27 00:37:35,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:35,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-27 00:37:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:37:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:37:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:35,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:35,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:35,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:37:35,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:35,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:35,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:35,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:37:35,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 00:37:35,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:35,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:35,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:35,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:37:35,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:37:35,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:35,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:36,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:37:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:36,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:37:36,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:37:36,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:36,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:37:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:37:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:36,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:37,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-27 00:37:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:37:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:37,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:37,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:37,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:37,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:37,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:37,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:37:37,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:37:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:37:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:37:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:37,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:37,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:37,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:37,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 00:37:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:37,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:37:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:37:38,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104554934] [2020-10-27 00:37:38,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:38,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:38,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662776151] [2020-10-27 00:37:38,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:38,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:38,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:38,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:38,557 INFO L87 Difference]: Start difference. First operand 13196 states and 15863 transitions. Second operand 7 states. [2020-10-27 00:37:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:54,391 INFO L93 Difference]: Finished difference Result 35266 states and 44284 transitions. [2020-10-27 00:37:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:54,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 996 [2020-10-27 00:37:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:54,472 INFO L225 Difference]: With dead ends: 35266 [2020-10-27 00:37:54,472 INFO L226 Difference]: Without dead ends: 23488 [2020-10-27 00:37:54,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:37:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23488 states. [2020-10-27 00:37:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23488 to 21945. [2020-10-27 00:37:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21945 states. [2020-10-27 00:37:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21945 states to 21945 states and 25962 transitions. [2020-10-27 00:37:55,003 INFO L78 Accepts]: Start accepts. Automaton has 21945 states and 25962 transitions. Word has length 996 [2020-10-27 00:37:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:55,005 INFO L481 AbstractCegarLoop]: Abstraction has 21945 states and 25962 transitions. [2020-10-27 00:37:55,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 21945 states and 25962 transitions. [2020-10-27 00:37:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-27 00:37:55,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:55,058 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:55,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:37:55,058 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash 481189174, now seen corresponding path program 1 times [2020-10-27 00:37:55,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:55,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484587721] [2020-10-27 00:37:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:56,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:00,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:00,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1096 [2020-10-27 00:38:00,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:38:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-27 00:38:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:38:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:38:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:00,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:00,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:00,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:38:00,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:00,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:00,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:00,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 00:38:00,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:01,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 00:38:01,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:01,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:01,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:01,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:01,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:38:01,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:01,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:01,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:01,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:01,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:01,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-27 00:38:01,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:38:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:01,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:01,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:01,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:38:01,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:01,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:01,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:01,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:38:01,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:02,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:02,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:38:02,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 00:38:02,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:38:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:02,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:38:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:02,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:02,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:38:02,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:38:02,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:38:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 290 proven. 75 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2020-10-27 00:38:03,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484587721] [2020-10-27 00:38:03,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:03,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:03,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119020607] [2020-10-27 00:38:03,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:03,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:03,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:03,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:03,185 INFO L87 Difference]: Start difference. First operand 21945 states and 25962 transitions. Second operand 7 states. [2020-10-27 00:38:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:16,825 INFO L93 Difference]: Finished difference Result 50529 states and 61368 transitions. [2020-10-27 00:38:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:38:16,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1072 [2020-10-27 00:38:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:16,910 INFO L225 Difference]: With dead ends: 50529 [2020-10-27 00:38:16,910 INFO L226 Difference]: Without dead ends: 30002 [2020-10-27 00:38:16,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:38:16,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30002 states. [2020-10-27 00:38:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30002 to 29237. [2020-10-27 00:38:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29237 states. [2020-10-27 00:38:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29237 states to 29237 states and 34702 transitions. [2020-10-27 00:38:17,590 INFO L78 Accepts]: Start accepts. Automaton has 29237 states and 34702 transitions. Word has length 1072 [2020-10-27 00:38:17,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:17,592 INFO L481 AbstractCegarLoop]: Abstraction has 29237 states and 34702 transitions. [2020-10-27 00:38:17,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 29237 states and 34702 transitions. [2020-10-27 00:38:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1214 [2020-10-27 00:38:17,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:17,618 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:38:17,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:38:17,619 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:17,620 INFO L82 PathProgramCache]: Analyzing trace with hash -610090208, now seen corresponding path program 1 times [2020-10-27 00:38:17,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:17,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801143379] [2020-10-27 00:38:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1239 [2020-10-27 00:38:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:38:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-27 00:38:23,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:38:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:38:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:23,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:23,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:38:23,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 00:38:23,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:23,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:23,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:38:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:23,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:38:23,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:23,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:24,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:24,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:24,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:24,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 00:38:24,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-10-27 00:38:24,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:24,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:24,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:24,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:38:24,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:24,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:24,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:38:24,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 00:38:24,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:24,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:38:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:24,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:38:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:24,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:24,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:38:24,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:38:24,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:38:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:38:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:24,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:24,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 539 proven. 73 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2020-10-27 00:38:25,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801143379] [2020-10-27 00:38:25,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:25,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:25,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580134972] [2020-10-27 00:38:25,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:25,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:25,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:25,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:25,577 INFO L87 Difference]: Start difference. First operand 29237 states and 34702 transitions. Second operand 7 states. [2020-10-27 00:38:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:40,624 INFO L93 Difference]: Finished difference Result 64961 states and 78613 transitions. [2020-10-27 00:38:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:38:40,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1213 [2020-10-27 00:38:40,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:40,721 INFO L225 Difference]: With dead ends: 64961 [2020-10-27 00:38:40,722 INFO L226 Difference]: Without dead ends: 37142 [2020-10-27 00:38:40,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:38:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37142 states. [2020-10-27 00:38:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37142 to 37098. [2020-10-27 00:38:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37098 states. [2020-10-27 00:38:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37098 states to 37098 states and 43716 transitions. [2020-10-27 00:38:41,574 INFO L78 Accepts]: Start accepts. Automaton has 37098 states and 43716 transitions. Word has length 1213 [2020-10-27 00:38:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:41,576 INFO L481 AbstractCegarLoop]: Abstraction has 37098 states and 43716 transitions. [2020-10-27 00:38:41,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 37098 states and 43716 transitions. [2020-10-27 00:38:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2020-10-27 00:38:41,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:41,604 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:38:41,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:38:41,605 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash 990075860, now seen corresponding path program 1 times [2020-10-27 00:38:41,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:41,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141507121] [2020-10-27 00:38:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:47,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1315 [2020-10-27 00:38:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:38:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 00:38:47,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:38:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 00:38:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:47,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:47,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:47,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:47,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:38:47,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:47,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:47,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:47,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:47,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:47,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-27 00:38:47,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:47,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:47,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:48,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:48,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:38:48,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:48,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:48,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:38:48,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:48,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:48,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:48,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:38:48,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:48,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:48,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:38:48,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:48,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:38:48,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:48,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:38:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:48,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:38:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 00:38:48,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:48,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:38:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:38:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:48,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:38:48,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:38:48,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:38:48,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1167 [2020-10-27 00:38:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:48,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:48,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:38:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:38:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:38:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 495 proven. 70 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2020-10-27 00:38:49,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141507121] [2020-10-27 00:38:49,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:49,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:49,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767072749] [2020-10-27 00:38:49,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:49,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:49,896 INFO L87 Difference]: Start difference. First operand 37098 states and 43716 transitions. Second operand 7 states. [2020-10-27 00:39:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:39:10,123 INFO L93 Difference]: Finished difference Result 83507 states and 101388 transitions. [2020-10-27 00:39:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:39:10,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1287 [2020-10-27 00:39:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:39:10,274 INFO L225 Difference]: With dead ends: 83507 [2020-10-27 00:39:10,275 INFO L226 Difference]: Without dead ends: 47827 [2020-10-27 00:39:10,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:39:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47827 states. [2020-10-27 00:39:11,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47827 to 47104. [2020-10-27 00:39:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47104 states. [2020-10-27 00:39:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47104 states to 47104 states and 55728 transitions. [2020-10-27 00:39:11,606 INFO L78 Accepts]: Start accepts. Automaton has 47104 states and 55728 transitions. Word has length 1287 [2020-10-27 00:39:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:39:11,607 INFO L481 AbstractCegarLoop]: Abstraction has 47104 states and 55728 transitions. [2020-10-27 00:39:11,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:39:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 47104 states and 55728 transitions. [2020-10-27 00:39:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1320 [2020-10-27 00:39:11,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:39:11,638 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:39:11,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:39:11,639 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:39:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:39:11,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1070860224, now seen corresponding path program 1 times [2020-10-27 00:39:11,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:39:11,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478673073] [2020-10-27 00:39:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:39:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:12,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking...