/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=DEEPEST --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/Problem17_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:54:21,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:54:21,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:54:21,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:54:21,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:54:21,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:54:21,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:54:21,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:54:21,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:54:21,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:54:21,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:54:21,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:54:21,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:54:21,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:54:21,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:54:21,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:54:21,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:54:21,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:54:21,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:54:21,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:54:21,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:54:21,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:54:21,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:54:21,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:54:21,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:54:21,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:54:21,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:54:21,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:54:21,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:54:21,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:54:21,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:54:21,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:54:21,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:54:21,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:54:21,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:54:21,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:54:21,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:54:21,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:54:21,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:54:21,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:54:21,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:54:21,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 18:54:21,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:54:21,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:54:21,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:54:21,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:54:21,367 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:54:21,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:54:21,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:54:21,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:54:21,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:54:21,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:54:21,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:54:21,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:54:21,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:54:21,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:54:21,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:54:21,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:54:21,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:54:21,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:54:21,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:54:21,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:54:21,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:54:21,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:54:21,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:54:21,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:54:21,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:54:21,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:54:21,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:54:21,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:54:21,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:54:21,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:54:21,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:54:21,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:54:21,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:54:21,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:54:21,934 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:54:21,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27.c [2020-10-27 18:54:22,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ff0b2ff0/05647941f3514acd808886634650ea54/FLAGefc4586a0 [2020-10-27 18:54:23,033 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:54:23,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label27.c [2020-10-27 18:54:23,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ff0b2ff0/05647941f3514acd808886634650ea54/FLAGefc4586a0 [2020-10-27 18:54:23,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ff0b2ff0/05647941f3514acd808886634650ea54 [2020-10-27 18:54:23,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:54:23,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:54:23,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:54:23,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:54:23,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:54:23,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:54:23" (1/1) ... [2020-10-27 18:54:23,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:23, skipping insertion in model container [2020-10-27 18:54:23,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:54:23" (1/1) ... [2020-10-27 18:54:23,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:54:23,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:54:24,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:54:24,380 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:54:24,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:54:24,902 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:54:24,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24 WrapperNode [2020-10-27 18:54:24,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:54:24,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:54:24,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:54:24,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:54:24,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... [2020-10-27 18:54:24,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... [2020-10-27 18:54:25,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... [2020-10-27 18:54:25,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... [2020-10-27 18:54:25,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... [2020-10-27 18:54:25,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... [2020-10-27 18:54:25,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... [2020-10-27 18:54:25,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:54:25,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:54:25,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:54:25,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:54:25,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:54:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:54:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:54:25,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:54:25,440 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:54:25,440 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:54:25,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:54:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:54:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:54:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:54:25,441 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:54:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:54:25,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:54:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:54:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:54:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:54:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:54:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:54:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:54:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:54:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:54:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:54:35,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:54:35,184 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:54:35,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:54:35 BoogieIcfgContainer [2020-10-27 18:54:35,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:54:35,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:54:35,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:54:35,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:54:35,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:54:23" (1/3) ... [2020-10-27 18:54:35,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b12100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:54:35, skipping insertion in model container [2020-10-27 18:54:35,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:54:24" (2/3) ... [2020-10-27 18:54:35,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b12100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:54:35, skipping insertion in model container [2020-10-27 18:54:35,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:54:35" (3/3) ... [2020-10-27 18:54:35,205 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label27.c [2020-10-27 18:54:35,224 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:54:35,231 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:54:35,247 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:54:35,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:54:35,298 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:54:35,298 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:54:35,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:54:35,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:54:35,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:54:35,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:54:35,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:54:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 18:54:35,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 18:54:35,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:54:35,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:54:35,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:54:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:54:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash -841172446, now seen corresponding path program 1 times [2020-10-27 18:54:35,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:54:35,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585092130] [2020-10-27 18:54:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:54:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:54:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:54:36,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:54:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 18:54:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:54:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-27 18:54:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:54:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:54:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:54:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 18:54:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:54:36,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:54:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:54:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:54:36,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:54:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:54:36,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:54:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:54:36,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:54:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:54:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:54:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:54:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:54:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:54:36,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585092130] [2020-10-27 18:54:36,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:54:36,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:54:36,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3789009] [2020-10-27 18:54:36,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:54:36,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:54:36,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:54:36,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:54:36,690 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-27 18:54:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:54:49,597 INFO L93 Difference]: Finished difference Result 1734 states and 3143 transitions. [2020-10-27 18:54:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:54:49,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-27 18:54:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:54:49,632 INFO L225 Difference]: With dead ends: 1734 [2020-10-27 18:54:49,632 INFO L226 Difference]: Without dead ends: 1048 [2020-10-27 18:54:49,645 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 [2020-10-27 18:54:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-10-27 18:54:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1029. [2020-10-27 18:54:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-27 18:54:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1764 transitions. [2020-10-27 18:54:49,792 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1764 transitions. Word has length 48 [2020-10-27 18:54:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:54:49,793 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1764 transitions. [2020-10-27 18:54:49,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:54:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1764 transitions. [2020-10-27 18:54:49,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 18:54:49,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:54:49,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:54:49,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:54:49,801 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:54:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:54:49,802 INFO L82 PathProgramCache]: Analyzing trace with hash -120909466, now seen corresponding path program 1 times [2020-10-27 18:54:49,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:54:49,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966148547] [2020-10-27 18:54:49,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:54:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:54:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:54:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:54:51,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:54:51,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 18:54:51,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:54:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1961 [2020-10-27 18:54:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:54:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:54:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:54:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 18:54:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:54:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:54:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:54:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:54:52,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:54:52,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:54:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:54:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:54:52,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:54:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:54:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:54:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:54:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:54:52,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:54:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:54:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:54:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:54:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:54:52,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:54:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 18:54:52,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:54:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:54:52,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:54:52,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:54:52,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:54:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:54:52,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966148547] [2020-10-27 18:54:52,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:54:52,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:54:52,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232024500] [2020-10-27 18:54:52,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:54:52,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:54:52,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:54:52,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:54:52,390 INFO L87 Difference]: Start difference. First operand 1029 states and 1764 transitions. Second operand 5 states. [2020-10-27 18:55:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:55:08,279 INFO L93 Difference]: Finished difference Result 2946 states and 5136 transitions. [2020-10-27 18:55:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:55:08,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 18:55:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:55:08,301 INFO L225 Difference]: With dead ends: 2946 [2020-10-27 18:55:08,301 INFO L226 Difference]: Without dead ends: 1923 [2020-10-27 18:55:08,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:55:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-10-27 18:55:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1915. [2020-10-27 18:55:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-27 18:55:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 3038 transitions. [2020-10-27 18:55:08,421 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 3038 transitions. Word has length 117 [2020-10-27 18:55:08,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:55:08,425 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 3038 transitions. [2020-10-27 18:55:08,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:55:08,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 3038 transitions. [2020-10-27 18:55:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 18:55:08,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:55:08,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:55:08,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:55:08,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:55:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:55:08,441 INFO L82 PathProgramCache]: Analyzing trace with hash -421519870, now seen corresponding path program 1 times [2020-10-27 18:55:08,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:55:08,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437707792] [2020-10-27 18:55:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:55:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:08,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:09,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:09,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 18:55:09,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:55:09,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-10-27 18:55:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:55:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 18:55:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 18:55:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:55:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:55:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:55:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:10,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:55:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:55:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:55:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:10,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:10,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 18:55:10,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:10,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:55:10,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:55:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 18:55:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:55:10,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437707792] [2020-10-27 18:55:10,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:55:10,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:55:10,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947279409] [2020-10-27 18:55:10,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:55:10,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:55:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:55:10,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:55:10,353 INFO L87 Difference]: Start difference. First operand 1915 states and 3038 transitions. Second operand 5 states. [2020-10-27 18:55:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:55:29,979 INFO L93 Difference]: Finished difference Result 5586 states and 9014 transitions. [2020-10-27 18:55:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:55:29,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 18:55:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:55:30,012 INFO L225 Difference]: With dead ends: 5586 [2020-10-27 18:55:30,013 INFO L226 Difference]: Without dead ends: 3677 [2020-10-27 18:55:30,020 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 [2020-10-27 18:55:30,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2020-10-27 18:55:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3669. [2020-10-27 18:55:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3669 states. [2020-10-27 18:55:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5178 transitions. [2020-10-27 18:55:30,153 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5178 transitions. Word has length 119 [2020-10-27 18:55:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:55:30,154 INFO L481 AbstractCegarLoop]: Abstraction has 3669 states and 5178 transitions. [2020-10-27 18:55:30,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:55:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5178 transitions. [2020-10-27 18:55:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 18:55:30,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:55:30,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:55:30,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:55:30,158 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:55:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:55:30,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1296119857, now seen corresponding path program 1 times [2020-10-27 18:55:30,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:55:30,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622467439] [2020-10-27 18:55:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:55:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:31,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:55:31,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:55:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1300 [2020-10-27 18:55:31,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:55:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-27 18:55:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 18:55:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:31,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:55:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:31,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:31,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:55:31,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:55:31,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:31,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:55:31,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:31,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:55:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:55:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:55:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:31,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:31,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:55:31,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:31,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:55:31,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:55:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:55:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:55:31,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622467439] [2020-10-27 18:55:31,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:55:31,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:55:31,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784175859] [2020-10-27 18:55:31,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:55:31,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:55:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:55:31,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:55:31,888 INFO L87 Difference]: Start difference. First operand 3669 states and 5178 transitions. Second operand 5 states. [2020-10-27 18:55:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:55:48,447 INFO L93 Difference]: Finished difference Result 10851 states and 15635 transitions. [2020-10-27 18:55:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:55:48,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-27 18:55:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:55:48,491 INFO L225 Difference]: With dead ends: 10851 [2020-10-27 18:55:48,492 INFO L226 Difference]: Without dead ends: 7188 [2020-10-27 18:55:48,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:55:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2020-10-27 18:55:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 7177. [2020-10-27 18:55:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7177 states. [2020-10-27 18:55:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 9429 transitions. [2020-10-27 18:55:48,749 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 9429 transitions. Word has length 122 [2020-10-27 18:55:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:55:48,750 INFO L481 AbstractCegarLoop]: Abstraction has 7177 states and 9429 transitions. [2020-10-27 18:55:48,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:55:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 9429 transitions. [2020-10-27 18:55:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 18:55:48,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:55:48,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:55:48,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:55:48,754 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:55:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:55:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash 382609648, now seen corresponding path program 1 times [2020-10-27 18:55:48,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:55:48,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433576336] [2020-10-27 18:55:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:55:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:49,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:53,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 18:55:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:55:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 18:55:53,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:55:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 18:55:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 18:55:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:53,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:55:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:53,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:53,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:55:53,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:53,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:55:53,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:55:53,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:55:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:55:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:55:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:55:54,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:55:54,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:55:54,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:55:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:55:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:55:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:55:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:55:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:55:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:55:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:55:54,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433576336] [2020-10-27 18:55:54,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:55:54,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:55:54,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075685095] [2020-10-27 18:55:54,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:55:54,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:55:54,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:55:54,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:55:54,161 INFO L87 Difference]: Start difference. First operand 7177 states and 9429 transitions. Second operand 5 states. [2020-10-27 18:56:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:56:14,802 INFO L93 Difference]: Finished difference Result 17420 states and 23427 transitions. [2020-10-27 18:56:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:56:14,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-27 18:56:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:56:14,862 INFO L225 Difference]: With dead ends: 17420 [2020-10-27 18:56:14,862 INFO L226 Difference]: Without dead ends: 10249 [2020-10-27 18:56:14,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:56:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10249 states. [2020-10-27 18:56:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10249 to 8076. [2020-10-27 18:56:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8076 states. [2020-10-27 18:56:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8076 states to 8076 states and 11131 transitions. [2020-10-27 18:56:15,204 INFO L78 Accepts]: Start accepts. Automaton has 8076 states and 11131 transitions. Word has length 134 [2020-10-27 18:56:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:56:15,205 INFO L481 AbstractCegarLoop]: Abstraction has 8076 states and 11131 transitions. [2020-10-27 18:56:15,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:56:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 8076 states and 11131 transitions. [2020-10-27 18:56:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 18:56:15,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:56:15,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:56:15,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:56:15,217 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:56:15,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:56:15,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1363881388, now seen corresponding path program 1 times [2020-10-27 18:56:15,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:56:15,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964511766] [2020-10-27 18:56:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:56:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:17,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 18:56:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:56:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-27 18:56:17,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:56:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 18:56:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 18:56:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:17,431 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:56:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:56:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:17,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:17,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:56:17,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:17,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:56:17,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:17,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:56:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:56:17,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:56:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:56:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 18:56:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 18:56:17,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:56:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 18:56:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:56:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:56:17,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964511766] [2020-10-27 18:56:17,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:56:17,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:56:17,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673469468] [2020-10-27 18:56:17,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:56:17,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:56:17,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:56:17,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:56:17,741 INFO L87 Difference]: Start difference. First operand 8076 states and 11131 transitions. Second operand 5 states. [2020-10-27 18:56:17,898 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:56:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:56:36,176 INFO L93 Difference]: Finished difference Result 20542 states and 29738 transitions. [2020-10-27 18:56:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:56:36,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-27 18:56:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:56:36,247 INFO L225 Difference]: With dead ends: 20542 [2020-10-27 18:56:36,248 INFO L226 Difference]: Without dead ends: 12472 [2020-10-27 18:56:36,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:56:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12472 states. [2020-10-27 18:56:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12472 to 12458. [2020-10-27 18:56:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12458 states. [2020-10-27 18:56:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12458 states to 12458 states and 17141 transitions. [2020-10-27 18:56:36,690 INFO L78 Accepts]: Start accepts. Automaton has 12458 states and 17141 transitions. Word has length 136 [2020-10-27 18:56:36,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:56:36,691 INFO L481 AbstractCegarLoop]: Abstraction has 12458 states and 17141 transitions. [2020-10-27 18:56:36,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:56:36,691 INFO L276 IsEmpty]: Start isEmpty. Operand 12458 states and 17141 transitions. [2020-10-27 18:56:36,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 18:56:36,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:56:36,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:56:36,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:56:36,697 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:56:36,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:56:36,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1841564296, now seen corresponding path program 1 times [2020-10-27 18:56:36,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:56:36,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331449669] [2020-10-27 18:56:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:56:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:36,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:39,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:39,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 18:56:39,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:56:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-10-27 18:56:39,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:56:39,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:56:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 18:56:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:56:39,279 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:56:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:56:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:39,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:56:39,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:56:39,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:56:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:56:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:56:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:56:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:56:39,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:56:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:56:39,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:56:39,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:56:39,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:56:39,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:56:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-27 18:56:39,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:56:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:56:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 18:56:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:56:39,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:56:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:56:39,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331449669] [2020-10-27 18:56:39,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:56:39,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:56:39,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479152899] [2020-10-27 18:56:39,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:56:39,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:56:39,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:56:39,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:56:39,814 INFO L87 Difference]: Start difference. First operand 12458 states and 17141 transitions. Second operand 6 states. [2020-10-27 18:56:39,998 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:56:40,746 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 18:57:06,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:57:06,476 INFO L93 Difference]: Finished difference Result 38097 states and 56366 transitions. [2020-10-27 18:57:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:57:06,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-10-27 18:57:06,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:57:06,636 INFO L225 Difference]: With dead ends: 38097 [2020-10-27 18:57:06,636 INFO L226 Difference]: Without dead ends: 25645 [2020-10-27 18:57:06,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:57:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25645 states. [2020-10-27 18:57:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25645 to 23469. [2020-10-27 18:57:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23469 states. [2020-10-27 18:57:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23469 states to 23469 states and 32558 transitions. [2020-10-27 18:57:07,647 INFO L78 Accepts]: Start accepts. Automaton has 23469 states and 32558 transitions. Word has length 149 [2020-10-27 18:57:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:57:07,648 INFO L481 AbstractCegarLoop]: Abstraction has 23469 states and 32558 transitions. [2020-10-27 18:57:07,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:57:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 23469 states and 32558 transitions. [2020-10-27 18:57:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-27 18:57:07,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:57:07,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:57:07,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:57:07,817 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:57:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:57:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash 589773483, now seen corresponding path program 1 times [2020-10-27 18:57:07,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:57:07,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123545577] [2020-10-27 18:57:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:57:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:07,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:08,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:57:08,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 796 [2020-10-27 18:57:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:57:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:57:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-27 18:57:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:08,866 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 18:57:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:57:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:57:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 18:57:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:57:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:57:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:08,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:57:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:09,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:09,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:09,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:57:09,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-27 18:57:09,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:57:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:57:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 18:57:09,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:57:10,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123545577] [2020-10-27 18:57:10,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:57:10,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 18:57:10,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689818113] [2020-10-27 18:57:10,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:57:10,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:57:10,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:57:10,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:57:10,007 INFO L87 Difference]: Start difference. First operand 23469 states and 32558 transitions. Second operand 7 states. [2020-10-27 18:57:10,155 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 18:57:15,538 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 18:57:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:57:31,128 INFO L93 Difference]: Finished difference Result 47643 states and 67324 transitions. [2020-10-27 18:57:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:57:31,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-27 18:57:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:57:31,235 INFO L225 Difference]: With dead ends: 47643 [2020-10-27 18:57:31,235 INFO L226 Difference]: Without dead ends: 24180 [2020-10-27 18:57:31,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:57:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24180 states. [2020-10-27 18:57:32,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24180 to 24177. [2020-10-27 18:57:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24177 states. [2020-10-27 18:57:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24177 states to 24177 states and 34694 transitions. [2020-10-27 18:57:32,271 INFO L78 Accepts]: Start accepts. Automaton has 24177 states and 34694 transitions. Word has length 243 [2020-10-27 18:57:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:57:32,272 INFO L481 AbstractCegarLoop]: Abstraction has 24177 states and 34694 transitions. [2020-10-27 18:57:32,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:57:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24177 states and 34694 transitions. [2020-10-27 18:57:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-27 18:57:32,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:57:32,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:57:32,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:57:32,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:57:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:57:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash 534609602, now seen corresponding path program 1 times [2020-10-27 18:57:32,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:57:32,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751016338] [2020-10-27 18:57:32,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:57:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:32,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:37,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:37,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-27 18:57:37,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:57:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 18:57:37,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:57:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-27 18:57:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 18:57:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:57:37,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:57:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:37,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:37,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:57:37,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:57:37,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:57:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:57:37,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:57:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:37,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:37,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:57:37,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:57:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:57:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:57:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 18:57:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:37,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:57:37,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:57:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 18:57:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:57:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:57:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:57:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:37,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 18:57:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:57:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:57:38,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:57:38,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 18:57:38,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:57:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-27 18:57:38,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:57:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:57:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 18:57:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:57:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:57:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-27 18:57:38,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751016338] [2020-10-27 18:57:38,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:57:38,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 18:57:38,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840501553] [2020-10-27 18:57:38,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:57:38,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:57:38,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:57:38,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:57:38,467 INFO L87 Difference]: Start difference. First operand 24177 states and 34694 transitions. Second operand 6 states. [2020-10-27 18:57:39,889 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 18:57:42,270 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 18:58:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:58:07,390 INFO L93 Difference]: Finished difference Result 65058 states and 98020 transitions. [2020-10-27 18:58:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:58:07,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 328 [2020-10-27 18:58:07,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:58:07,571 INFO L225 Difference]: With dead ends: 65058 [2020-10-27 18:58:07,572 INFO L226 Difference]: Without dead ends: 41320 [2020-10-27 18:58:07,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:58:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41320 states. [2020-10-27 18:58:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41320 to 37401. [2020-10-27 18:58:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37401 states. [2020-10-27 18:58:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37401 states to 37401 states and 50194 transitions. [2020-10-27 18:58:08,747 INFO L78 Accepts]: Start accepts. Automaton has 37401 states and 50194 transitions. Word has length 328 [2020-10-27 18:58:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:58:08,748 INFO L481 AbstractCegarLoop]: Abstraction has 37401 states and 50194 transitions. [2020-10-27 18:58:08,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:58:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 37401 states and 50194 transitions. [2020-10-27 18:58:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-27 18:58:08,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:58:08,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:58:08,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:58:08,782 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:58:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:58:08,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1953371905, now seen corresponding path program 1 times [2020-10-27 18:58:08,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:58:08,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401307325] [2020-10-27 18:58:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:58:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:58:08,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:58:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking...