/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:35:33,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:35:33,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:35:33,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:35:33,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:35:33,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:35:33,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:35:33,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:35:33,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:35:33,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:35:33,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:35:33,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:35:33,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:35:33,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:35:33,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:35:33,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:35:33,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:35:33,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:35:33,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:35:33,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:35:33,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:35:33,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:35:33,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:35:33,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:35:33,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:35:33,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:35:33,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:35:33,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:35:33,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:35:33,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:35:33,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:35:33,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:35:33,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:35:33,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:35:33,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:35:33,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:35:33,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:35:33,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:35:33,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:35:33,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:35:33,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:35:33,205 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 00:35:33,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:35:33,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:35:33,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:35:33,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:35:33,235 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:35:33,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:35:33,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:35:33,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:35:33,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:35:33,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:35:33,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:35:33,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:35:33,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:35:33,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:35:33,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:35:33,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:35:33,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:35:33,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:35:33,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:35:33,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:35:33,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:35:33,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:35:33,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:35:33,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:35:33,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:35:33,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:35:33,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:35:33,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:35:33,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:35:33,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:35:33,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:35:33,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:35:33,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:35:33,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:35:33,686 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:35:33,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label52.c [2020-10-27 00:35:33,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f1d5cf4c/7d6a03ded3c64c18acb7a748174d0efe/FLAG008270820 [2020-10-27 00:35:34,701 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:35:34,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label52.c [2020-10-27 00:35:34,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f1d5cf4c/7d6a03ded3c64c18acb7a748174d0efe/FLAG008270820 [2020-10-27 00:35:35,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f1d5cf4c/7d6a03ded3c64c18acb7a748174d0efe [2020-10-27 00:35:35,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:35:35,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:35:35,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:35:35,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:35:35,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:35:35,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:35" (1/1) ... [2020-10-27 00:35:35,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d774bb 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 00:35:35,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:35" (1/1) ... [2020-10-27 00:35:35,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:35:35,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:35:36,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:35:36,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:35:37,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:35:37,249 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:35:37,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:37 WrapperNode [2020-10-27 00:35:37,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:35:37,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:35:37,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:35:37,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:35:37,264 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 00:35:37,266 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 00:35:37,325 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 00:35:37,325 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 00:35:37,438 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 00:35:37,467 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 00:35:37,489 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 00:35:37,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:35:37,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:35:37,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:35:37,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:35:37,512 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 00:35:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:35:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:35:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:35:37,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:35:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:35:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:35:37,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:35:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:35:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:35:37,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:35:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:35:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:35:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:35:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:35:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:35:37,599 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:35:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:35:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:35:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:35:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:35:37,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:35:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:35:37,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:35:41,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:35:41,800 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:35:41,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:41 BoogieIcfgContainer [2020-10-27 00:35:41,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:35:41,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:35:41,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:35:41,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:35:41,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:35:35" (1/3) ... [2020-10-27 00:35:41,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469cd2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:41, skipping insertion in model container [2020-10-27 00:35:41,811 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 00:35:41,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469cd2b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:41, skipping insertion in model container [2020-10-27 00:35:41,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:41" (3/3) ... [2020-10-27 00:35:41,813 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label52.c [2020-10-27 00:35:41,831 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:35:41,840 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:35:41,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:35:41,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:35:41,909 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:35:41,909 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:35:41,909 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:35:41,909 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:35:41,909 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:35:41,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:35:41,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:35:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:35:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 00:35:41,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:41,960 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] [2020-10-27 00:35:41,961 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:41,967 INFO L82 PathProgramCache]: Analyzing trace with hash -118491560, now seen corresponding path program 1 times [2020-10-27 00:35:41,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:41,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616653328] [2020-10-27 00:35:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:42,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:42,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 00:35:42,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-27 00:35:42,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:35:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:35:42,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 00:35:42,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:35:42,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:42,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:42,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:35:42,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:35:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:42,924 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 00:35:42,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616653328] [2020-10-27 00:35:42,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:35:42,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:35:42,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721424427] [2020-10-27 00:35:42,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:35:42,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:42,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:35:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:35:42,962 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:35:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:35:57,140 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:35:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:35:57,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-27 00:35:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:35:57,193 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:35:57,194 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:35:57,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:35:57,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:35:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:35:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:35:57,381 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 23 [2020-10-27 00:35:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:35:57,382 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:35:57,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:35:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:35:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 00:35:57,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:57,388 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 00:35:57,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:35:57,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:57,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:57,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1547853931, now seen corresponding path program 1 times [2020-10-27 00:35:57,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:57,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871102300] [2020-10-27 00:35:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:57,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:57,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:57,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:35:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-27 00:35:57,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:35:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:35:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 00:35:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:35:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:58,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:58,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:35:58,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:58,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:35:58,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:35:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:35:58,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:35:58,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:58,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:35:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:58,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:35:58,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:35:58,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:35:58,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:35:58,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-27 00:35:58,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:35:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:35:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:35:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 00:35:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:35:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:35:58,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871102300] [2020-10-27 00:35:58,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:35:58,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:35:58,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841647405] [2020-10-27 00:35:58,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:35:58,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:35:58,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:35:58,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:35:58,536 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-27 00:36:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:09,752 INFO L93 Difference]: Finished difference Result 6511 states and 10972 transitions. [2020-10-27 00:36:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:36:09,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-27 00:36:09,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:09,790 INFO L225 Difference]: With dead ends: 6511 [2020-10-27 00:36:09,791 INFO L226 Difference]: Without dead ends: 4381 [2020-10-27 00:36:09,798 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 00:36:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-27 00:36:09,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3598. [2020-10-27 00:36:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-10-27 00:36:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5300 transitions. [2020-10-27 00:36:09,938 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5300 transitions. Word has length 111 [2020-10-27 00:36:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:09,939 INFO L481 AbstractCegarLoop]: Abstraction has 3598 states and 5300 transitions. [2020-10-27 00:36:09,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5300 transitions. [2020-10-27 00:36:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 00:36:09,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:09,943 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 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 00:36:09,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:36:09,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:09,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1280324762, now seen corresponding path program 1 times [2020-10-27 00:36:09,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:09,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66552145] [2020-10-27 00:36:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:11,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:36:11,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1539 [2020-10-27 00:36:11,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:11,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:11,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:36:11,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:36:11,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:11,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:11,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:36:11,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 00:36:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:36:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 00:36:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:11,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:11,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:36:11,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 00:36:11,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:36:11,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:11,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 30 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:36:12,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66552145] [2020-10-27 00:36:12,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:12,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:36:12,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571912760] [2020-10-27 00:36:12,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:12,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:12,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:12,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:12,104 INFO L87 Difference]: Start difference. First operand 3598 states and 5300 transitions. Second operand 7 states. [2020-10-27 00:36:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:22,959 INFO L93 Difference]: Finished difference Result 8740 states and 12690 transitions. [2020-10-27 00:36:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:36:22,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-27 00:36:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:22,995 INFO L225 Difference]: With dead ends: 8740 [2020-10-27 00:36:22,995 INFO L226 Difference]: Without dead ends: 5148 [2020-10-27 00:36:23,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:36:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2020-10-27 00:36:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 5084. [2020-10-27 00:36:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2020-10-27 00:36:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 7116 transitions. [2020-10-27 00:36:23,154 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 7116 transitions. Word has length 182 [2020-10-27 00:36:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:23,154 INFO L481 AbstractCegarLoop]: Abstraction has 5084 states and 7116 transitions. [2020-10-27 00:36:23,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 7116 transitions. [2020-10-27 00:36:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-27 00:36:23,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:23,159 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:36:23,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:36:23,160 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:23,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1569384042, now seen corresponding path program 1 times [2020-10-27 00:36:23,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:23,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356578909] [2020-10-27 00:36:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:23,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:25,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:25,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-27 00:36:25,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2008 [2020-10-27 00:36:25,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:36:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:25,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:25,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:36:25,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:25,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:25,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:36:25,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 00:36:25,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:25,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:36:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:36:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:36:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 83 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:36:26,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356578909] [2020-10-27 00:36:26,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:26,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:36:26,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384078707] [2020-10-27 00:36:26,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:26,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:26,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:26,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:26,066 INFO L87 Difference]: Start difference. First operand 5084 states and 7116 transitions. Second operand 7 states. [2020-10-27 00:36:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:39,304 INFO L93 Difference]: Finished difference Result 14090 states and 20311 transitions. [2020-10-27 00:36:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:36:39,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-27 00:36:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:39,355 INFO L225 Difference]: With dead ends: 14090 [2020-10-27 00:36:39,355 INFO L226 Difference]: Without dead ends: 9012 [2020-10-27 00:36:39,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:36:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9012 states. [2020-10-27 00:36:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9012 to 8144. [2020-10-27 00:36:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8144 states. [2020-10-27 00:36:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8144 states to 8144 states and 10862 transitions. [2020-10-27 00:36:39,617 INFO L78 Accepts]: Start accepts. Automaton has 8144 states and 10862 transitions. Word has length 233 [2020-10-27 00:36:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:39,618 INFO L481 AbstractCegarLoop]: Abstraction has 8144 states and 10862 transitions. [2020-10-27 00:36:39,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 8144 states and 10862 transitions. [2020-10-27 00:36:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-27 00:36:39,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:39,633 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:36:39,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:36:39,634 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:39,635 INFO L82 PathProgramCache]: Analyzing trace with hash -385918139, now seen corresponding path program 1 times [2020-10-27 00:36:39,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:39,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441972051] [2020-10-27 00:36:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:44,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:44,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-27 00:36:44,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:36:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 00:36:44,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:36:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:44,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:36:44,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:44,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:44,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:44,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:36:44,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:44,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:44,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 00:36:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:45,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:36:45,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:45,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-27 00:36:45,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:36:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:36:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:46,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:46,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:36:46,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:46,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:36:46,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:36:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:36:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:46,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:36:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:46,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:46,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:36:46,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:46,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:36:46,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:36:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:46,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-27 00:36:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:46,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:46,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:36:46,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:46,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:36:46,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:36:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 45 proven. 200 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 00:36:46,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441972051] [2020-10-27 00:36:46,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:46,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:36:46,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491504616] [2020-10-27 00:36:46,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:46,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:46,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:46,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:46,895 INFO L87 Difference]: Start difference. First operand 8144 states and 10862 transitions. Second operand 7 states. [2020-10-27 00:37:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:00,693 INFO L93 Difference]: Finished difference Result 23121 states and 31732 transitions. [2020-10-27 00:37:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:00,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 540 [2020-10-27 00:37:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:00,771 INFO L225 Difference]: With dead ends: 23121 [2020-10-27 00:37:00,771 INFO L226 Difference]: Without dead ends: 14983 [2020-10-27 00:37:00,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:37:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14983 states. [2020-10-27 00:37:01,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14983 to 14138. [2020-10-27 00:37:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14138 states. [2020-10-27 00:37:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14138 states to 14138 states and 18300 transitions. [2020-10-27 00:37:01,208 INFO L78 Accepts]: Start accepts. Automaton has 14138 states and 18300 transitions. Word has length 540 [2020-10-27 00:37:01,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:01,209 INFO L481 AbstractCegarLoop]: Abstraction has 14138 states and 18300 transitions. [2020-10-27 00:37:01,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14138 states and 18300 transitions. [2020-10-27 00:37:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2020-10-27 00:37:01,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:01,239 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:37:01,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:37:01,239 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:01,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1167048292, now seen corresponding path program 1 times [2020-10-27 00:37:01,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:01,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027016902] [2020-10-27 00:37:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:01,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:06,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 746 [2020-10-27 00:37:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:37:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 00:37:06,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:37:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:37:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:06,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:06,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:06,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:06,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:37:06,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:06,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:37:06,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:06,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 00:37:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:37:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:37:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:37:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:07,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:08,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:08,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-10-27 00:37:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:37:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:37:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:08,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:08,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:08,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:08,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:08,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:37:08,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:37:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:08,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:37:08,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:08,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-27 00:37:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:08,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:08,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:08,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:08,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:37:08,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:08,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:08,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:37:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:08,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:37:08,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-10-27 00:37:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:08,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:08,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:37:08,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:08,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:37:08,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:37:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 251 proven. 206 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-27 00:37:09,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027016902] [2020-10-27 00:37:09,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:09,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:09,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433684246] [2020-10-27 00:37:09,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:09,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:09,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:09,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:09,053 INFO L87 Difference]: Start difference. First operand 14138 states and 18300 transitions. Second operand 7 states. [2020-10-27 00:37:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:22,588 INFO L93 Difference]: Finished difference Result 32831 states and 42095 transitions. [2020-10-27 00:37:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:22,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 726 [2020-10-27 00:37:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:22,653 INFO L225 Difference]: With dead ends: 32831 [2020-10-27 00:37:22,653 INFO L226 Difference]: Without dead ends: 18331 [2020-10-27 00:37:22,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 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 00:37:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18331 states. [2020-10-27 00:37:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18331 to 17564. [2020-10-27 00:37:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17564 states. [2020-10-27 00:37:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17564 states to 17564 states and 20424 transitions. [2020-10-27 00:37:23,097 INFO L78 Accepts]: Start accepts. Automaton has 17564 states and 20424 transitions. Word has length 726 [2020-10-27 00:37:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:23,098 INFO L481 AbstractCegarLoop]: Abstraction has 17564 states and 20424 transitions. [2020-10-27 00:37:23,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 17564 states and 20424 transitions. [2020-10-27 00:37:23,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-27 00:37:23,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:23,153 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 00:37:23,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:37:23,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:23,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1707386500, now seen corresponding path program 1 times [2020-10-27 00:37:23,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:23,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807291376] [2020-10-27 00:37:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:28,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:28,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-27 00:37:28,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5258 [2020-10-27 00:37:28,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:37:28,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:37:28,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:37:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:29,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:29,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:37:29,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:29,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:37:29,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:29,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:29,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:29,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:29,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:29,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:29,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:29,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:37:29,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:37:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:29,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:37:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:37:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:29,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:29,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:37:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:37:29,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:29,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:37:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:30,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 00:37:30,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:37:30,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:30,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:30,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:30,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:30,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:37:30,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:30,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:37:30,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:37:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:30,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:30,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-27 00:37:30,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:37:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:30,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:37:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:37:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:37:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:37:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 314 proven. 87 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2020-10-27 00:37:31,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807291376] [2020-10-27 00:37:31,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:31,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:31,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921662487] [2020-10-27 00:37:31,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:31,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:31,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:31,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:31,686 INFO L87 Difference]: Start difference. First operand 17564 states and 20424 transitions. Second operand 7 states. [2020-10-27 00:37:36,959 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:37:47,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:47,023 INFO L93 Difference]: Finished difference Result 43315 states and 52041 transitions. [2020-10-27 00:37:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:47,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1067 [2020-10-27 00:37:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:47,106 INFO L225 Difference]: With dead ends: 43315 [2020-10-27 00:37:47,106 INFO L226 Difference]: Without dead ends: 25757 [2020-10-27 00:37:47,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:37:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25757 states. [2020-10-27 00:37:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25757 to 23518. [2020-10-27 00:37:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23518 states. [2020-10-27 00:37:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23518 states to 23518 states and 27381 transitions. [2020-10-27 00:37:47,612 INFO L78 Accepts]: Start accepts. Automaton has 23518 states and 27381 transitions. Word has length 1067 [2020-10-27 00:37:47,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:47,615 INFO L481 AbstractCegarLoop]: Abstraction has 23518 states and 27381 transitions. [2020-10-27 00:37:47,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:37:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 23518 states and 27381 transitions. [2020-10-27 00:37:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2020-10-27 00:37:47,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:47,634 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:37:47,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:37:47,634 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash -568684951, now seen corresponding path program 1 times [2020-10-27 00:37:47,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:47,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932709016] [2020-10-27 00:37:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:49,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1169 [2020-10-27 00:37:52,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:37:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-27 00:37:52,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:37:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:37:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:53,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:53,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:53,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:37:53,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:53,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:53,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:53,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:53,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:37:53,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:53,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:37:53,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:53,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:53,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:37:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:53,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:53,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:37:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:54,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-27 00:37:54,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:37:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:54,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:54,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:54,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:54,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:54,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:37:54,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:54,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:54,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:37:54,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:37:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:54,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:54,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:37:54,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:37:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:37:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:37:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:54,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:37:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:37:54,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:37:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2020-10-27 00:37:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:54,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:54,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:37:54,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:37:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:37:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 245 proven. 148 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2020-10-27 00:37:55,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932709016] [2020-10-27 00:37:55,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:55,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:37:55,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294759239] [2020-10-27 00:37:55,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:37:55,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:55,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:37:55,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:37:55,478 INFO L87 Difference]: Start difference. First operand 23518 states and 27381 transitions. Second operand 7 states. [2020-10-27 00:38:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:06,281 INFO L93 Difference]: Finished difference Result 60677 states and 72404 transitions. [2020-10-27 00:38:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:38:06,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1143 [2020-10-27 00:38:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:06,422 INFO L225 Difference]: With dead ends: 60677 [2020-10-27 00:38:06,422 INFO L226 Difference]: Without dead ends: 37165 [2020-10-27 00:38:06,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:38:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37165 states. [2020-10-27 00:38:07,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37165 to 35667. [2020-10-27 00:38:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35667 states. [2020-10-27 00:38:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35667 states to 35667 states and 42488 transitions. [2020-10-27 00:38:07,275 INFO L78 Accepts]: Start accepts. Automaton has 35667 states and 42488 transitions. Word has length 1143 [2020-10-27 00:38:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:07,276 INFO L481 AbstractCegarLoop]: Abstraction has 35667 states and 42488 transitions. [2020-10-27 00:38:07,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 35667 states and 42488 transitions. [2020-10-27 00:38:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1211 [2020-10-27 00:38:07,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:07,301 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 00:38:07,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:38:07,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:07,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:07,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1236123587, now seen corresponding path program 1 times [2020-10-27 00:38:07,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:07,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142982876] [2020-10-27 00:38:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:12,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:12,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1236 [2020-10-27 00:38:12,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:38:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 00:38:12,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:38:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:38:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:12,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:12,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:38:12,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:13,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:13,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:13,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:13,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:13,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:13,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:13,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:13,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:38:13,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:13,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:13,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:13,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:13,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:13,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:13,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:38:13,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:13,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:13,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:13,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:13,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:38:13,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:13,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:13,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:13,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:38:13,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:38:13,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:38:13,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:38:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:14,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:14,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:38:14,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 00:38:14,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:38:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:14,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2020-10-27 00:38:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:14,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:14,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:14,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:38:14,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:14,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:38:14,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:14,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:14,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:38:14,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:14,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 454 proven. 87 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2020-10-27 00:38:15,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142982876] [2020-10-27 00:38:15,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:15,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:15,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846184646] [2020-10-27 00:38:15,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:15,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:15,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:15,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:15,268 INFO L87 Difference]: Start difference. First operand 35667 states and 42488 transitions. Second operand 7 states. [2020-10-27 00:38:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:26,162 INFO L93 Difference]: Finished difference Result 78494 states and 93437 transitions. [2020-10-27 00:38:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 00:38:26,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1210 [2020-10-27 00:38:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:26,296 INFO L225 Difference]: With dead ends: 78494 [2020-10-27 00:38:26,296 INFO L226 Difference]: Without dead ends: 42833 [2020-10-27 00:38:26,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:38:26,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42833 states. [2020-10-27 00:38:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42833 to 40627. [2020-10-27 00:38:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40627 states. [2020-10-27 00:38:27,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40627 states to 40627 states and 48167 transitions. [2020-10-27 00:38:27,232 INFO L78 Accepts]: Start accepts. Automaton has 40627 states and 48167 transitions. Word has length 1210 [2020-10-27 00:38:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:27,234 INFO L481 AbstractCegarLoop]: Abstraction has 40627 states and 48167 transitions. [2020-10-27 00:38:27,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 40627 states and 48167 transitions. [2020-10-27 00:38:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1287 [2020-10-27 00:38:27,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:27,264 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 00:38:27,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:38:27,265 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:27,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:27,266 INFO L82 PathProgramCache]: Analyzing trace with hash -637791582, now seen corresponding path program 1 times [2020-10-27 00:38:27,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:27,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814923533] [2020-10-27 00:38:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1314 [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 00:38:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:32,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:32,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:32,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:32,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:32,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:32,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:32,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:32,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:32,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:32,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:38:32,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:33,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:38:33,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:33,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:38:33,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:33,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:33,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:38:33,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 00:38:33,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:38:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:38:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:38:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1061 [2020-10-27 00:38:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:38:33,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:38:33,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-27 00:38:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:33,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1183 [2020-10-27 00:38:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:33,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:38:33,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 00:38:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:38:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1781 backedges. 343 proven. 148 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2020-10-27 00:38:34,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814923533] [2020-10-27 00:38:34,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:34,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:34,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727274895] [2020-10-27 00:38:34,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:34,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:34,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:34,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:34,640 INFO L87 Difference]: Start difference. First operand 40627 states and 48167 transitions. Second operand 7 states. [2020-10-27 00:38:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:47,261 INFO L93 Difference]: Finished difference Result 93451 states and 113224 transitions. [2020-10-27 00:38:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:38:47,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1286 [2020-10-27 00:38:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:47,432 INFO L225 Difference]: With dead ends: 93451 [2020-10-27 00:38:47,432 INFO L226 Difference]: Without dead ends: 52830 [2020-10-27 00:38:47,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:38:47,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52830 states. [2020-10-27 00:38:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52830 to 50650. [2020-10-27 00:38:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50650 states. [2020-10-27 00:38:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50650 states to 50650 states and 60792 transitions. [2020-10-27 00:38:48,510 INFO L78 Accepts]: Start accepts. Automaton has 50650 states and 60792 transitions. Word has length 1286 [2020-10-27 00:38:48,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:48,512 INFO L481 AbstractCegarLoop]: Abstraction has 50650 states and 60792 transitions. [2020-10-27 00:38:48,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:48,512 INFO L276 IsEmpty]: Start isEmpty. Operand 50650 states and 60792 transitions. [2020-10-27 00:38:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1304 [2020-10-27 00:38:48,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:48,538 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 00:38:48,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:38:48,539 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash -926132066, now seen corresponding path program 1 times [2020-10-27 00:38:48,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:48,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409420263] [2020-10-27 00:38:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:51,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:54,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1331 [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:38:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:54,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:54,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:38:54,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:54,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:54,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:54,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:54,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:54,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:54,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:55,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:38:55,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:55,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:55,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:38:55,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:55,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:38:55,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:38:55,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:38:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:38:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:55,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:38:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:38:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 00:38:55,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:38:55,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-27 00:38:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1200 [2020-10-27 00:38:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:55,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1858 backedges. 385 proven. 174 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2020-10-27 00:38:56,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409420263] [2020-10-27 00:38:56,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:56,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:56,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054784150] [2020-10-27 00:38:56,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:56,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:56,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:56,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:56,450 INFO L87 Difference]: Start difference. First operand 50650 states and 60792 transitions. Second operand 7 states.