/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:59:53,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:59:53,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:59:53,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:59:53,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:59:53,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:59:53,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:59:53,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:59:53,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:59:53,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:59:53,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:59:53,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:59:53,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:59:53,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:59:53,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:59:53,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:59:53,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:59:53,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:59:53,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:59:53,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:59:53,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:59:53,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:59:53,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:59:53,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:59:53,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:59:53,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:59:53,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:59:53,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:59:53,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:59:53,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:59:53,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:59:53,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:59:53,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:59:53,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:59:53,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:59:53,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:59:53,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:59:53,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:59:53,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:59:53,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:59:53,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:59:53,317 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 [2020-10-29 07:59:53,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:59:53,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:59:53,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:59:53,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:59:53,384 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:59:53,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:59:53,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:59:53,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:59:53,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:59:53,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:59:53,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:59:53,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:59:53,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:59:53,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:59:53,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:59:53,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:59:53,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:59:53,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:59:53,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:59:53,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:59:53,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:59:53,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:59:53,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:59:53,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:59:53,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:59:53,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:59:53,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:59:53,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:59:53,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:59:53,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:59:53,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:59:53,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:59:53,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:59:53,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:59:53,829 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:59:53,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label20.c [2020-10-29 07:59:53,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5653fe12b/395ef815b7ad456abe37edd8cedb6fc3/FLAGa8e446161 [2020-10-29 07:59:54,936 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:59:54,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label20.c [2020-10-29 07:59:54,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5653fe12b/395ef815b7ad456abe37edd8cedb6fc3/FLAGa8e446161 [2020-10-29 07:59:55,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5653fe12b/395ef815b7ad456abe37edd8cedb6fc3 [2020-10-29 07:59:55,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:59:55,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:59:55,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:59:55,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:59:55,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:59:55,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:59:55" (1/1) ... [2020-10-29 07:59:55,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d667cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:55, skipping insertion in model container [2020-10-29 07:59:55,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:59:55" (1/1) ... [2020-10-29 07:59:55,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:59:55,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:59:55,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:59:55,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:59:56,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:59:56,227 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:59:56,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56 WrapperNode [2020-10-29 07:59:56,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:59:56,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:59:56,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:59:56,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:59:56,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (1/1) ... [2020-10-29 07:59:56,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (1/1) ... [2020-10-29 07:59:56,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (1/1) ... [2020-10-29 07:59:56,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (1/1) ... [2020-10-29 07:59:56,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (1/1) ... [2020-10-29 07:59:56,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (1/1) ... [2020-10-29 07:59:56,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (1/1) ... [2020-10-29 07:59:56,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:59:56,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:59:56,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:59:56,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:59:56,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (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 [2020-10-29 07:59:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:59:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:59:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:59:56,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:59:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:59:56,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:59:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:59:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:59:56,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:59:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:59:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:59:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:59:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:59:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:59:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:59:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:59:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:59:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:59:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:59:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:59:56,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:59:59,051 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:59:59,051 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:59:59,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:59:59 BoogieIcfgContainer [2020-10-29 07:59:59,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:59:59,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:59:59,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:59:59,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:59:59,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:59:55" (1/3) ... [2020-10-29 07:59:59,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f91231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:59:59, skipping insertion in model container [2020-10-29 07:59:59,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:59:56" (2/3) ... [2020-10-29 07:59:59,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f91231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:59:59, skipping insertion in model container [2020-10-29 07:59:59,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:59:59" (3/3) ... [2020-10-29 07:59:59,064 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label20.c [2020-10-29 07:59:59,078 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:59:59,084 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:59:59,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:59:59,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:59:59,130 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:59:59,130 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:59:59,131 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:59:59,131 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:59:59,131 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:59:59,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:59:59,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:59:59,159 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 07:59:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 07:59:59,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:59:59,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:59:59,169 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:59:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:59:59,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1257391060, now seen corresponding path program 1 times [2020-10-29 07:59:59,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:59:59,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319904627] [2020-10-29 07:59:59,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:59:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:59:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:59:59,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:59:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 07:59:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:59:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-29 07:59:59,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:59:59,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:59:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:59:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:59:59,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 07:59:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:00:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:00,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:00,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:00,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:00:00,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:00,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:00:00,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319904627] [2020-10-29 08:00:00,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:00:00,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:00:00,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114749411] [2020-10-29 08:00:00,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:00:00,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:00,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:00:00,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:00:00,218 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-29 08:00:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:04,919 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-29 08:00:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:00:04,922 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 08:00:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:04,953 INFO L225 Difference]: With dead ends: 1174 [2020-10-29 08:00:04,953 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 08:00:04,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:00:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 08:00:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-29 08:00:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-29 08:00:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-29 08:00:05,133 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 31 [2020-10-29 08:00:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:05,134 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-29 08:00:05,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:00:05,135 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-29 08:00:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 08:00:05,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:05,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:05,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:00:05,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:05,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1711632939, now seen corresponding path program 1 times [2020-10-29 08:00:05,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:05,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335769465] [2020-10-29 08:00:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:06,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:06,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 08:00:06,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:00:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-29 08:00:06,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:06,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:00:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:00:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:00:06,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:00:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:06,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:06,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:00:06,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:06,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:06,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:00:06,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:06,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 08:00:06,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:06,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:00:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:00:07,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335769465] [2020-10-29 08:00:07,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:00:07,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:00:07,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570609472] [2020-10-29 08:00:07,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:00:07,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:07,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:00:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:00:07,033 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 8 states. [2020-10-29 08:00:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:16,619 INFO L93 Difference]: Finished difference Result 2771 states and 4140 transitions. [2020-10-29 08:00:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:00:16,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-10-29 08:00:16,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:16,641 INFO L225 Difference]: With dead ends: 2771 [2020-10-29 08:00:16,641 INFO L226 Difference]: Without dead ends: 2084 [2020-10-29 08:00:16,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:00:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-10-29 08:00:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2070. [2020-10-29 08:00:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-29 08:00:16,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2819 transitions. [2020-10-29 08:00:16,764 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2819 transitions. Word has length 107 [2020-10-29 08:00:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:16,765 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 2819 transitions. [2020-10-29 08:00:16,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:00:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2819 transitions. [2020-10-29 08:00:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 08:00:16,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:16,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:16,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:00:16,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1687023117, now seen corresponding path program 1 times [2020-10-29 08:00:16,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:16,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162233135] [2020-10-29 08:00:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:17,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:17,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 08:00:17,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-29 08:00:17,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:17,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 08:00:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 08:00:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:17,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:17,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:00:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:17,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:00:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:00:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:17,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:17,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:17,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:00:17,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 08:00:17,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:17,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:17,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:00:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:00:17,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162233135] [2020-10-29 08:00:17,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:00:17,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:00:17,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148571601] [2020-10-29 08:00:17,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:00:17,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:17,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:00:17,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:00:17,422 INFO L87 Difference]: Start difference. First operand 2070 states and 2819 transitions. Second operand 5 states. [2020-10-29 08:00:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:22,018 INFO L93 Difference]: Finished difference Result 5174 states and 7351 transitions. [2020-10-29 08:00:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:00:22,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-29 08:00:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:22,044 INFO L225 Difference]: With dead ends: 5174 [2020-10-29 08:00:22,044 INFO L226 Difference]: Without dead ends: 3110 [2020-10-29 08:00:22,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:00:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2020-10-29 08:00:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3104. [2020-10-29 08:00:22,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3104 states. [2020-10-29 08:00:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 4047 transitions. [2020-10-29 08:00:22,178 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 4047 transitions. Word has length 122 [2020-10-29 08:00:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:22,179 INFO L481 AbstractCegarLoop]: Abstraction has 3104 states and 4047 transitions. [2020-10-29 08:00:22,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:00:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 4047 transitions. [2020-10-29 08:00:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 08:00:22,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:22,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:00:22,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:00:22,196 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1614256824, now seen corresponding path program 1 times [2020-10-29 08:00:22,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:22,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078701018] [2020-10-29 08:00:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:26,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:26,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:00:26,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:00:26,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4164 [2020-10-29 08:00:26,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:26,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:00:26,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:00:26,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:26,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:26,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:26,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:26,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:26,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:00:26,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:26,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:00:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:00:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:26,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:00:26,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 08:00:26,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:26,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:26,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:00:26,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:26,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 08:00:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:26,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:27,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:27,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:00:27,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-29 08:00:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:27,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:27,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:00:27,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:00:27,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078701018] [2020-10-29 08:00:27,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:00:27,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:00:27,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656479172] [2020-10-29 08:00:27,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:00:27,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:27,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:00:27,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:00:27,436 INFO L87 Difference]: Start difference. First operand 3104 states and 4047 transitions. Second operand 7 states. [2020-10-29 08:00:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:33,982 INFO L93 Difference]: Finished difference Result 7316 states and 9940 transitions. [2020-10-29 08:00:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:00:33,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-29 08:00:33,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:34,009 INFO L225 Difference]: With dead ends: 7316 [2020-10-29 08:00:34,009 INFO L226 Difference]: Without dead ends: 4218 [2020-10-29 08:00:34,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:00:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2020-10-29 08:00:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 4160. [2020-10-29 08:00:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4160 states. [2020-10-29 08:00:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 5209 transitions. [2020-10-29 08:00:34,143 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 5209 transitions. Word has length 260 [2020-10-29 08:00:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:34,144 INFO L481 AbstractCegarLoop]: Abstraction has 4160 states and 5209 transitions. [2020-10-29 08:00:34,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:00:34,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 5209 transitions. [2020-10-29 08:00:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 08:00:34,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:34,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:34,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:00:34,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:34,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1396121527, now seen corresponding path program 1 times [2020-10-29 08:00:34,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:34,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997714539] [2020-10-29 08:00:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:39,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:39,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-29 08:00:39,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:00:39,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4969 [2020-10-29 08:00:39,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:39,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:00:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:00:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:00:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:39,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:39,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:39,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:39,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:00:39,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:39,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:39,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:39,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:39,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:39,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:00:39,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:39,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-29 08:00:39,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:39,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:39,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:00:39,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:00:40,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997714539] [2020-10-29 08:00:40,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:00:40,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:00:40,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130859032] [2020-10-29 08:00:40,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:00:40,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:40,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:00:40,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:00:40,300 INFO L87 Difference]: Start difference. First operand 4160 states and 5209 transitions. Second operand 7 states. [2020-10-29 08:00:45,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:45,556 INFO L93 Difference]: Finished difference Result 9028 states and 11254 transitions. [2020-10-29 08:00:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:00:45,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-29 08:00:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:45,581 INFO L225 Difference]: With dead ends: 9028 [2020-10-29 08:00:45,582 INFO L226 Difference]: Without dead ends: 4874 [2020-10-29 08:00:45,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:00:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2020-10-29 08:00:45,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4860. [2020-10-29 08:00:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4860 states. [2020-10-29 08:00:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 5980 transitions. [2020-10-29 08:00:45,723 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 5980 transitions. Word has length 280 [2020-10-29 08:00:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:45,724 INFO L481 AbstractCegarLoop]: Abstraction has 4860 states and 5980 transitions. [2020-10-29 08:00:45,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:00:45,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 5980 transitions. [2020-10-29 08:00:45,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-29 08:00:45,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:45,731 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:00:45,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:00:45,732 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:45,732 INFO L82 PathProgramCache]: Analyzing trace with hash -992068143, now seen corresponding path program 1 times [2020-10-29 08:00:45,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:45,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411964028] [2020-10-29 08:00:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:46,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:47,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-29 08:00:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 08:00:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 08:00:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:50,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 08:00:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:00:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-29 08:00:50,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:50,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:50,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:50,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:50,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:50,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:00:50,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:50,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:00:50,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:50,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:51,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:51,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:00:51,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:00:51,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 08:00:51,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:51,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:51,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:00:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:00:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:51,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:51,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 08:00:51,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:00:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 08:00:51,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:51,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 08:00:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-29 08:00:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:51,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:51,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 08:00:51,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 08:00:51,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:51,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:00:51,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 08:00:51,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 231 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-29 08:00:51,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411964028] [2020-10-29 08:00:51,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:00:51,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:00:51,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780358727] [2020-10-29 08:00:51,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:00:51,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:00:51,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:00:51,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:00:51,678 INFO L87 Difference]: Start difference. First operand 4860 states and 5980 transitions. Second operand 7 states. [2020-10-29 08:00:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:00:57,188 INFO L93 Difference]: Finished difference Result 11185 states and 14549 transitions. [2020-10-29 08:00:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:00:57,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-29 08:00:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:00:57,215 INFO L225 Difference]: With dead ends: 11185 [2020-10-29 08:00:57,215 INFO L226 Difference]: Without dead ends: 5560 [2020-10-29 08:00:57,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:00:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2020-10-29 08:00:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5511. [2020-10-29 08:00:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5511 states. [2020-10-29 08:00:57,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 6089 transitions. [2020-10-29 08:00:57,369 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 6089 transitions. Word has length 303 [2020-10-29 08:00:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:00:57,369 INFO L481 AbstractCegarLoop]: Abstraction has 5511 states and 6089 transitions. [2020-10-29 08:00:57,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:00:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 6089 transitions. [2020-10-29 08:00:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-29 08:00:57,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:00:57,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:00:57,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:00:57,380 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:00:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:00:57,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2141772388, now seen corresponding path program 1 times [2020-10-29 08:00:57,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:00:57,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218720935] [2020-10-29 08:00:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:00:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:59,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:59,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-29 08:00:59,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:00:59,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1804 [2020-10-29 08:00:59,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:59,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:59,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:00:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:00:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 08:00:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:00:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:00:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:59,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:00:59,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:59,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:00:59,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:59,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:00:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:59,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:00:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:00:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:00:59,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:00:59,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:00:59,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:00:59,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:00:59,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:00:59,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:00:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:00:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:00:59,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:00:59,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:00:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:00:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:00:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:00,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:00,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:01:00,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 08:01:00,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:00,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 08:01:00,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:01:00,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218720935] [2020-10-29 08:01:00,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:00,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:01:00,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993272967] [2020-10-29 08:01:00,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:01:00,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:00,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:01:00,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:01:00,410 INFO L87 Difference]: Start difference. First operand 5511 states and 6089 transitions. Second operand 7 states. [2020-10-29 08:01:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:04,433 INFO L93 Difference]: Finished difference Result 12063 states and 13496 transitions. [2020-10-29 08:01:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:01:04,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-29 08:01:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:04,462 INFO L225 Difference]: With dead ends: 12063 [2020-10-29 08:01:04,462 INFO L226 Difference]: Without dead ends: 6895 [2020-10-29 08:01:04,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:01:04,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2020-10-29 08:01:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 6544. [2020-10-29 08:01:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6544 states. [2020-10-29 08:01:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 7184 transitions. [2020-10-29 08:01:04,623 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 7184 transitions. Word has length 433 [2020-10-29 08:01:04,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:04,624 INFO L481 AbstractCegarLoop]: Abstraction has 6544 states and 7184 transitions. [2020-10-29 08:01:04,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:01:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 7184 transitions. [2020-10-29 08:01:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-10-29 08:01:04,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:04,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:04,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:01:04,639 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:04,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2044223496, now seen corresponding path program 1 times [2020-10-29 08:01:04,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:04,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447435799] [2020-10-29 08:01:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:09,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:09,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-29 08:01:09,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:01:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4536 [2020-10-29 08:01:09,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:09,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:01:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:01:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-29 08:01:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:09,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:01:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:09,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:01:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:09,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:09,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 08:01:09,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:10,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:01:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:10,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:10,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:10,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:01:10,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:10,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 08:01:10,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:10,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:01:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:01:10,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447435799] [2020-10-29 08:01:10,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:10,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:01:10,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037408754] [2020-10-29 08:01:10,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:01:10,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:10,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:01:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:01:10,844 INFO L87 Difference]: Start difference. First operand 6544 states and 7184 transitions. Second operand 7 states. [2020-10-29 08:01:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:14,319 INFO L93 Difference]: Finished difference Result 12769 states and 14069 transitions. [2020-10-29 08:01:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:01:14,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 527 [2020-10-29 08:01:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:14,342 INFO L225 Difference]: With dead ends: 12769 [2020-10-29 08:01:14,343 INFO L226 Difference]: Without dead ends: 6570 [2020-10-29 08:01:14,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:01:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2020-10-29 08:01:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 6552. [2020-10-29 08:01:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6552 states. [2020-10-29 08:01:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6552 states to 6552 states and 7198 transitions. [2020-10-29 08:01:14,513 INFO L78 Accepts]: Start accepts. Automaton has 6552 states and 7198 transitions. Word has length 527 [2020-10-29 08:01:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:14,515 INFO L481 AbstractCegarLoop]: Abstraction has 6552 states and 7198 transitions. [2020-10-29 08:01:14,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:01:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6552 states and 7198 transitions. [2020-10-29 08:01:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-10-29 08:01:14,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:14,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:01:14,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:01:14,525 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:14,526 INFO L82 PathProgramCache]: Analyzing trace with hash 676911621, now seen corresponding path program 1 times [2020-10-29 08:01:14,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:14,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449211295] [2020-10-29 08:01:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:14,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:17,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:19,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:19,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-29 08:01:19,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:01:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 08:01:19,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:19,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:01:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:01:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-29 08:01:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:19,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:19,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:01:19,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:19,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:19,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:19,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:20,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:20,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:01:20,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 08:01:20,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:20,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:01:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:01:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:20,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:20,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 08:01:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-29 08:01:20,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:20,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:01:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-29 08:01:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:21,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:01:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:21,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 08:01:21,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 08:01:21,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:21,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:01:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 08:01:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:01:21,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449211295] [2020-10-29 08:01:21,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:21,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:01:21,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627648820] [2020-10-29 08:01:21,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:01:21,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:21,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:01:21,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:01:21,847 INFO L87 Difference]: Start difference. First operand 6552 states and 7198 transitions. Second operand 7 states. [2020-10-29 08:01:26,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:26,279 INFO L93 Difference]: Finished difference Result 13457 states and 14846 transitions. [2020-10-29 08:01:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:01:26,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 600 [2020-10-29 08:01:26,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:26,300 INFO L225 Difference]: With dead ends: 13457 [2020-10-29 08:01:26,300 INFO L226 Difference]: Without dead ends: 7250 [2020-10-29 08:01:26,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:01:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7250 states. [2020-10-29 08:01:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7250 to 7238. [2020-10-29 08:01:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7238 states. [2020-10-29 08:01:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 7931 transitions. [2020-10-29 08:01:26,463 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 7931 transitions. Word has length 600 [2020-10-29 08:01:26,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:26,464 INFO L481 AbstractCegarLoop]: Abstraction has 7238 states and 7931 transitions. [2020-10-29 08:01:26,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:01:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 7931 transitions. [2020-10-29 08:01:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-29 08:01:26,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:26,473 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-29 08:01:26,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:01:26,474 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:26,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:26,474 INFO L82 PathProgramCache]: Analyzing trace with hash 31745442, now seen corresponding path program 1 times [2020-10-29 08:01:26,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:26,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218401996] [2020-10-29 08:01:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:26,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:30,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:30,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-29 08:01:30,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:01:30,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4105 [2020-10-29 08:01:30,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:30,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-29 08:01:30,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 08:01:30,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:30,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:30,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:30,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:01:30,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:30,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:30,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:30,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:30,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:30,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:01:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:31,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 08:01:31,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:31,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-29 08:01:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:31,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:31,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:01:31,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 08:01:31,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:31,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:01:31,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:31,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-10-29 08:01:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 08:01:31,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 357 proven. 69 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-29 08:01:31,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218401996] [2020-10-29 08:01:31,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:31,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:01:31,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686393612] [2020-10-29 08:01:31,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:01:31,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:31,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:01:31,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:01:31,796 INFO L87 Difference]: Start difference. First operand 7238 states and 7931 transitions. Second operand 8 states. [2020-10-29 08:01:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:38,404 INFO L93 Difference]: Finished difference Result 18220 states and 20185 transitions. [2020-10-29 08:01:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:01:38,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 634 [2020-10-29 08:01:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:38,435 INFO L225 Difference]: With dead ends: 18220 [2020-10-29 08:01:38,435 INFO L226 Difference]: Without dead ends: 11327 [2020-10-29 08:01:38,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:01:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11327 states. [2020-10-29 08:01:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11327 to 11319. [2020-10-29 08:01:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11319 states. [2020-10-29 08:01:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11319 states to 11319 states and 12337 transitions. [2020-10-29 08:01:38,665 INFO L78 Accepts]: Start accepts. Automaton has 11319 states and 12337 transitions. Word has length 634 [2020-10-29 08:01:38,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:38,666 INFO L481 AbstractCegarLoop]: Abstraction has 11319 states and 12337 transitions. [2020-10-29 08:01:38,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:01:38,666 INFO L276 IsEmpty]: Start isEmpty. Operand 11319 states and 12337 transitions. [2020-10-29 08:01:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-10-29 08:01:38,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:38,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:38,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:01:38,677 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:38,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1521930374, now seen corresponding path program 1 times [2020-10-29 08:01:38,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:38,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952866799] [2020-10-29 08:01:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:38,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:39,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:39,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-10-29 08:01:39,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:39,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-29 08:01:39,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:39,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 08:01:39,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 08:01:39,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:39,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:39,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:39,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:39,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:01:39,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:39,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:39,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:39,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:39,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:01:39,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:39,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:01:39,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:39,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:39,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:40,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:01:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:40,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:01:40,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:01:40,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:40,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:01:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:40,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:40,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 08:01:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 08:01:40,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:40,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 324 [2020-10-29 08:01:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:01:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:40,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:40,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 08:01:40,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:01:40,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:40,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 08:01:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2020-10-29 08:01:40,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952866799] [2020-10-29 08:01:40,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:40,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:01:40,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336743906] [2020-10-29 08:01:40,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:01:40,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:40,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:01:40,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:01:40,935 INFO L87 Difference]: Start difference. First operand 11319 states and 12337 transitions. Second operand 5 states. [2020-10-29 08:01:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:44,191 INFO L93 Difference]: Finished difference Result 24991 states and 27285 transitions. [2020-10-29 08:01:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:01:44,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 708 [2020-10-29 08:01:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:44,244 INFO L225 Difference]: With dead ends: 24991 [2020-10-29 08:01:44,245 INFO L226 Difference]: Without dead ends: 14017 [2020-10-29 08:01:44,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:01:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14017 states. [2020-10-29 08:01:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14017 to 14017. [2020-10-29 08:01:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14017 states. [2020-10-29 08:01:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14017 states to 14017 states and 15171 transitions. [2020-10-29 08:01:44,541 INFO L78 Accepts]: Start accepts. Automaton has 14017 states and 15171 transitions. Word has length 708 [2020-10-29 08:01:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:44,543 INFO L481 AbstractCegarLoop]: Abstraction has 14017 states and 15171 transitions. [2020-10-29 08:01:44,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:01:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 14017 states and 15171 transitions. [2020-10-29 08:01:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2020-10-29 08:01:44,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:44,564 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:44,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:01:44,565 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:44,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:44,566 INFO L82 PathProgramCache]: Analyzing trace with hash 862147592, now seen corresponding path program 1 times [2020-10-29 08:01:44,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:44,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407449796] [2020-10-29 08:01:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:49,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-29 08:01:49,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 08:01:49,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:49,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:01:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:49,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:49,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:01:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:49,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:49,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:01:49,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:01:49,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:49,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:01:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:50,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:50,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:01:50,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:50,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 08:01:50,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:50,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:50,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:50,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:50,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:01:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:50,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:50,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:01:50,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:50,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:01:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:50,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:50,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:50,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:01:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:50,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:50,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:01:50,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-29 08:01:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:01:50,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:01:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:01:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:50,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-29 08:01:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:01:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:01:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:01:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 572 proven. 109 refuted. 0 times theorem prover too weak. 1073 trivial. 0 not checked. [2020-10-29 08:01:51,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407449796] [2020-10-29 08:01:51,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:01:51,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:01:51,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875683230] [2020-10-29 08:01:51,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:01:51,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:01:51,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:01:51,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:01:51,151 INFO L87 Difference]: Start difference. First operand 14017 states and 15171 transitions. Second operand 7 states. [2020-10-29 08:01:54,241 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 08:01:56,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:01:56,828 INFO L93 Difference]: Finished difference Result 30066 states and 32621 transitions. [2020-10-29 08:01:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:01:56,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 917 [2020-10-29 08:01:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:01:56,877 INFO L225 Difference]: With dead ends: 30066 [2020-10-29 08:01:56,878 INFO L226 Difference]: Without dead ends: 16394 [2020-10-29 08:01:56,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:01:56,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16394 states. [2020-10-29 08:01:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16394 to 16051. [2020-10-29 08:01:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16051 states. [2020-10-29 08:01:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16051 states to 16051 states and 17359 transitions. [2020-10-29 08:01:57,187 INFO L78 Accepts]: Start accepts. Automaton has 16051 states and 17359 transitions. Word has length 917 [2020-10-29 08:01:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:01:57,188 INFO L481 AbstractCegarLoop]: Abstraction has 16051 states and 17359 transitions. [2020-10-29 08:01:57,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:01:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16051 states and 17359 transitions. [2020-10-29 08:01:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2020-10-29 08:01:57,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:01:57,216 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:01:57,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:01:57,217 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:01:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:01:57,218 INFO L82 PathProgramCache]: Analyzing trace with hash -931101651, now seen corresponding path program 1 times [2020-10-29 08:01:57,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:01:57,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171197517] [2020-10-29 08:01:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:01:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:01:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:01:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:02,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-29 08:02:02,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:02:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-29 08:02:02,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:02,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-29 08:02:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 08:02:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:02,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:02,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:02,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:02:02,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 08:02:02,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:02,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:02:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:02,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-29 08:02:02,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:03,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:02:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:03,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:03,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:02:03,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 08:02:03,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:03,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:03,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:02:03,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:03,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-29 08:02:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:03,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:02:03,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:02:03,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:03,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-29 08:02:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:03,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 834 [2020-10-29 08:02:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:03,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:03,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:03,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:02:03,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:02:03,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:03,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:02:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1585 backedges. 592 proven. 221 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2020-10-29 08:02:05,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171197517] [2020-10-29 08:02:05,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:05,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:05,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103816430] [2020-10-29 08:02:05,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:05,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:05,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:05,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:05,389 INFO L87 Difference]: Start difference. First operand 16051 states and 17359 transitions. Second operand 7 states. [2020-10-29 08:02:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:09,542 INFO L93 Difference]: Finished difference Result 32110 states and 34793 transitions. [2020-10-29 08:02:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:02:09,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 967 [2020-10-29 08:02:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:09,588 INFO L225 Difference]: With dead ends: 32110 [2020-10-29 08:02:09,588 INFO L226 Difference]: Without dead ends: 16404 [2020-10-29 08:02:09,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:02:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16404 states. [2020-10-29 08:02:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16404 to 16396. [2020-10-29 08:02:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16396 states. [2020-10-29 08:02:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16396 states to 16396 states and 17741 transitions. [2020-10-29 08:02:09,912 INFO L78 Accepts]: Start accepts. Automaton has 16396 states and 17741 transitions. Word has length 967 [2020-10-29 08:02:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:09,914 INFO L481 AbstractCegarLoop]: Abstraction has 16396 states and 17741 transitions. [2020-10-29 08:02:09,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 16396 states and 17741 transitions. [2020-10-29 08:02:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2020-10-29 08:02:09,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:09,938 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:09,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:02:09,939 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash 625107569, now seen corresponding path program 1 times [2020-10-29 08:02:09,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:09,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460079250] [2020-10-29 08:02:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:10,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:10,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:15,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-29 08:02:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:02:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 08:02:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:15,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-29 08:02:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 08:02:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:15,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:15,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:02:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:15,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:15,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:15,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:15,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:15,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:15,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:02:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:15,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:15,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-29 08:02:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:02:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:15,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:15,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:02:15,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:15,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 08:02:15,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:15,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:15,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:15,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:15,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:02:15,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:16,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2020-10-29 08:02:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:16,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:16,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:02:16,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:02:16,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:16,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-29 08:02:16,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:16,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:16,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-29 08:02:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:16,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 594 proven. 221 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2020-10-29 08:02:17,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460079250] [2020-10-29 08:02:17,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:17,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:17,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280225832] [2020-10-29 08:02:17,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:17,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:17,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:17,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:17,266 INFO L87 Difference]: Start difference. First operand 16396 states and 17741 transitions. Second operand 7 states. [2020-10-29 08:02:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:22,186 INFO L93 Difference]: Finished difference Result 33826 states and 36811 transitions. [2020-10-29 08:02:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:02:22,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 969 [2020-10-29 08:02:22,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:22,230 INFO L225 Difference]: With dead ends: 33826 [2020-10-29 08:02:22,231 INFO L226 Difference]: Without dead ends: 17775 [2020-10-29 08:02:22,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:02:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17775 states. [2020-10-29 08:02:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17775 to 17751. [2020-10-29 08:02:22,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17751 states. [2020-10-29 08:02:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17751 states to 17751 states and 19099 transitions. [2020-10-29 08:02:22,584 INFO L78 Accepts]: Start accepts. Automaton has 17751 states and 19099 transitions. Word has length 969 [2020-10-29 08:02:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:22,586 INFO L481 AbstractCegarLoop]: Abstraction has 17751 states and 19099 transitions. [2020-10-29 08:02:22,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 17751 states and 19099 transitions. [2020-10-29 08:02:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-10-29 08:02:22,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:22,616 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:02:22,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 08:02:22,617 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash -967712900, now seen corresponding path program 1 times [2020-10-29 08:02:22,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:22,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618358542] [2020-10-29 08:02:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:27,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 523 [2020-10-29 08:02:27,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-29 08:02:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:28,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:28,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:28,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:02:28,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:28,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:28,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:02:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:28,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:28,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:02:28,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:02:28,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:28,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-29 08:02:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:28,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:28,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:02:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 08:02:28,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:28,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 08:02:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-29 08:02:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:28,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:02:28,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-29 08:02:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:29,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:29,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:29,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:29,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 881 [2020-10-29 08:02:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:29,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:29,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 672 proven. 221 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2020-10-29 08:02:31,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618358542] [2020-10-29 08:02:31,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:31,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:31,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574380994] [2020-10-29 08:02:31,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:31,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:31,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:31,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:31,069 INFO L87 Difference]: Start difference. First operand 17751 states and 19099 transitions. Second operand 7 states. [2020-10-29 08:02:35,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:35,355 INFO L93 Difference]: Finished difference Result 35508 states and 38260 transitions. [2020-10-29 08:02:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:02:35,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1014 [2020-10-29 08:02:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:35,395 INFO L225 Difference]: With dead ends: 35508 [2020-10-29 08:02:35,395 INFO L226 Difference]: Without dead ends: 18102 [2020-10-29 08:02:35,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:02:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18102 states. [2020-10-29 08:02:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18102 to 18090. [2020-10-29 08:02:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18090 states. [2020-10-29 08:02:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18090 states to 18090 states and 19460 transitions. [2020-10-29 08:02:35,738 INFO L78 Accepts]: Start accepts. Automaton has 18090 states and 19460 transitions. Word has length 1014 [2020-10-29 08:02:35,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:35,739 INFO L481 AbstractCegarLoop]: Abstraction has 18090 states and 19460 transitions. [2020-10-29 08:02:35,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:35,739 INFO L276 IsEmpty]: Start isEmpty. Operand 18090 states and 19460 transitions. [2020-10-29 08:02:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2020-10-29 08:02:35,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:35,766 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:35,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 08:02:35,767 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:35,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1748705192, now seen corresponding path program 1 times [2020-10-29 08:02:35,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:35,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915782825] [2020-10-29 08:02:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:39,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:41,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:41,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1059 [2020-10-29 08:02:41,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:02:41,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-29 08:02:41,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:41,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 797 [2020-10-29 08:02:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 08:02:41,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:41,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:02:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:41,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:41,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:41,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:41,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:41,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:02:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:41,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:41,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:02:41,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:02:41,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:41,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:41,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:02:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:41,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-29 08:02:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:02:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:41,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:41,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:41,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-29 08:02:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:41,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:41,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 08:02:41,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:02:41,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:41,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:41,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 08:02:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:41,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-29 08:02:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:42,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:42,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:02:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:42,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2020-10-29 08:02:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:42,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2141 backedges. 617 proven. 109 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2020-10-29 08:02:42,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915782825] [2020-10-29 08:02:42,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:42,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:42,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701432798] [2020-10-29 08:02:42,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:42,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:42,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:42,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:42,796 INFO L87 Difference]: Start difference. First operand 18090 states and 19460 transitions. Second operand 7 states. [2020-10-29 08:02:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:49,139 INFO L93 Difference]: Finished difference Result 40251 states and 43448 transitions. [2020-10-29 08:02:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:02:49,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2020-10-29 08:02:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:49,194 INFO L225 Difference]: With dead ends: 40251 [2020-10-29 08:02:49,194 INFO L226 Difference]: Without dead ends: 22506 [2020-10-29 08:02:49,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:02:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22506 states. [2020-10-29 08:02:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22506 to 22169. [2020-10-29 08:02:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22169 states. [2020-10-29 08:02:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22169 states to 22169 states and 23789 transitions. [2020-10-29 08:02:49,593 INFO L78 Accepts]: Start accepts. Automaton has 22169 states and 23789 transitions. Word has length 1037 [2020-10-29 08:02:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:49,595 INFO L481 AbstractCegarLoop]: Abstraction has 22169 states and 23789 transitions. [2020-10-29 08:02:49,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 22169 states and 23789 transitions. [2020-10-29 08:02:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-29 08:02:49,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:49,636 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:49,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 08:02:49,636 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:49,637 INFO L82 PathProgramCache]: Analyzing trace with hash 636448722, now seen corresponding path program 1 times [2020-10-29 08:02:49,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:49,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300557788] [2020-10-29 08:02:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1106 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3832 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 961 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:02:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:53,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:53,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:53,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:53,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:02:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:53,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:53,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:53,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:53,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:02:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:53,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:02:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:54,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:54,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:02:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:54,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:54,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-29 08:02:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:54,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:54,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:54,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 08:02:54,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:02:54,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:54,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:02:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:02:54,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-29 08:02:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:54,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:02:54,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 951 [2020-10-29 08:02:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:02:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:02:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 08:02:54,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:02:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2264 backedges. 693 proven. 2 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2020-10-29 08:02:55,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300557788] [2020-10-29 08:02:55,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:02:55,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:02:55,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765987456] [2020-10-29 08:02:55,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:02:55,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:55,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:02:55,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:02:55,193 INFO L87 Difference]: Start difference. First operand 22169 states and 23789 transitions. Second operand 7 states. [2020-10-29 08:02:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:59,431 INFO L93 Difference]: Finished difference Result 43659 states and 46896 transitions. [2020-10-29 08:02:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:02:59,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1084 [2020-10-29 08:02:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:59,482 INFO L225 Difference]: With dead ends: 43659 [2020-10-29 08:02:59,482 INFO L226 Difference]: Without dead ends: 22176 [2020-10-29 08:02:59,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:02:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22176 states. [2020-10-29 08:02:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22176 to 22168. [2020-10-29 08:02:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22168 states. [2020-10-29 08:02:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22168 states to 22168 states and 23683 transitions. [2020-10-29 08:02:59,896 INFO L78 Accepts]: Start accepts. Automaton has 22168 states and 23683 transitions. Word has length 1084 [2020-10-29 08:02:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:59,897 INFO L481 AbstractCegarLoop]: Abstraction has 22168 states and 23683 transitions. [2020-10-29 08:02:59,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:02:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 22168 states and 23683 transitions. [2020-10-29 08:02:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1160 [2020-10-29 08:02:59,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:59,932 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:02:59,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 08:02:59,932 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:59,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1385337986, now seen corresponding path program 1 times [2020-10-29 08:02:59,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:59,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322348324] [2020-10-29 08:02:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1185 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 896 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-29 08:03:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:05,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:03:05,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:05,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:03:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:03:05,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:03:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:05,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:03:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:05,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-29 08:03:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:03:05,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:03:05,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:05,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-29 08:03:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:03:05,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:03:05,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2020-10-29 08:03:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:03:05,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 08:03:05,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:05,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 08:03:05,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 884 [2020-10-29 08:03:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:05,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 08:03:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1026 [2020-10-29 08:03:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:06,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:03:06,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3092 backedges. 251 proven. 8 refuted. 0 times theorem prover too weak. 2833 trivial. 0 not checked. [2020-10-29 08:03:06,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322348324] [2020-10-29 08:03:06,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:06,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:03:06,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059384662] [2020-10-29 08:03:06,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:03:06,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:03:06,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:03:06,826 INFO L87 Difference]: Start difference. First operand 22168 states and 23683 transitions. Second operand 5 states. [2020-10-29 08:03:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:10,547 INFO L93 Difference]: Finished difference Result 43307 states and 46319 transitions. [2020-10-29 08:03:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:03:10,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1159 [2020-10-29 08:03:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:10,583 INFO L225 Difference]: With dead ends: 43307 [2020-10-29 08:03:10,583 INFO L226 Difference]: Without dead ends: 21825 [2020-10-29 08:03:10,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:03:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21825 states. [2020-10-29 08:03:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21825 to 21825. [2020-10-29 08:03:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21825 states. [2020-10-29 08:03:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21825 states to 21825 states and 23030 transitions. [2020-10-29 08:03:10,952 INFO L78 Accepts]: Start accepts. Automaton has 21825 states and 23030 transitions. Word has length 1159 [2020-10-29 08:03:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:10,953 INFO L481 AbstractCegarLoop]: Abstraction has 21825 states and 23030 transitions. [2020-10-29 08:03:10,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:03:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 21825 states and 23030 transitions. [2020-10-29 08:03:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1267 [2020-10-29 08:03:10,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:10,987 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:10,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 08:03:10,987 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:10,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:10,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1301157821, now seen corresponding path program 1 times [2020-10-29 08:03:10,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:10,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067296380] [2020-10-29 08:03:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:12,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1294 [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 750 [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 08:03:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:16,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:03:16,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:03:16,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:03:16,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:03:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-29 08:03:16,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 08:03:16,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-29 08:03:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:16,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:03:16,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-29 08:03:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:03:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:03:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-29 08:03:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:16,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:16,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:03:16,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:03:16,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:16,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:03:16,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2020-10-29 08:03:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 08:03:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 884 [2020-10-29 08:03:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:03:17,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:03:17,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:03:17,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:17,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1026 [2020-10-29 08:03:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:17,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:03:17,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:03:17,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:17,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:17,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1136 [2020-10-29 08:03:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:17,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:17,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:03:17,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:17,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:03:17,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:17,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:03:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3896 backedges. 828 proven. 352 refuted. 0 times theorem prover too weak. 2716 trivial. 0 not checked. [2020-10-29 08:03:18,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067296380] [2020-10-29 08:03:18,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:18,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:18,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868064001] [2020-10-29 08:03:18,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:18,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:18,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:18,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:18,224 INFO L87 Difference]: Start difference. First operand 21825 states and 23030 transitions. Second operand 7 states. [2020-10-29 08:03:20,171 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 08:03:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:23,457 INFO L93 Difference]: Finished difference Result 45336 states and 48002 transitions. [2020-10-29 08:03:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:03:23,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1266 [2020-10-29 08:03:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:23,500 INFO L225 Difference]: With dead ends: 45336 [2020-10-29 08:03:23,500 INFO L226 Difference]: Without dead ends: 24197 [2020-10-29 08:03:23,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:03:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24197 states. [2020-10-29 08:03:23,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24197 to 23523. [2020-10-29 08:03:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23523 states. [2020-10-29 08:03:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23523 states to 23523 states and 24784 transitions. [2020-10-29 08:03:23,840 INFO L78 Accepts]: Start accepts. Automaton has 23523 states and 24784 transitions. Word has length 1266 [2020-10-29 08:03:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:23,841 INFO L481 AbstractCegarLoop]: Abstraction has 23523 states and 24784 transitions. [2020-10-29 08:03:23,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 23523 states and 24784 transitions. [2020-10-29 08:03:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2020-10-29 08:03:23,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:23,891 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:23,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 08:03:23,891 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:23,892 INFO L82 PathProgramCache]: Analyzing trace with hash 737007590, now seen corresponding path program 1 times [2020-10-29 08:03:23,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:23,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264667059] [2020-10-29 08:03:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking...