/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:16:40,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:16:40,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:16:40,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:16:40,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:16:40,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:16:40,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:16:40,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:16:40,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:16:40,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:16:40,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:16:40,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:16:40,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:16:40,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:16:40,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:16:40,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:16:40,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:16:40,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:16:40,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:16:40,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:16:40,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:16:40,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:16:40,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:16:40,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:16:40,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:16:40,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:16:40,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:16:40,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:16:40,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:16:40,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:16:40,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:16:40,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:16:40,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:16:40,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:16:40,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:16:40,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:16:40,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:16:40,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:16:40,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:16:40,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:16:40,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:16:40,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:16:40,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:16:40,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:16:40,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:16:40,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:16:40,333 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:16:40,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:16:40,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:16:40,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:16:40,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:16:40,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:16:40,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:16:40,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:16:40,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:16:40,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:16:40,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:16:40,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:16:40,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:16:40,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:16:40,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:16:40,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:16:40,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:16:40,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:16:40,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:16:40,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:16:40,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:16:40,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:16:40,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:16:40,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:16:40,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:16:40,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:16:40,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:16:40,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:16:40,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:16:40,785 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:16:40,786 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:16:40,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum10-1.i [2020-10-29 12:16:40,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20b5d5b20/484f100d40c147418a0608328595bf3c/FLAGeac5e7e41 [2020-10-29 12:16:41,611 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:16:41,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum10-1.i [2020-10-29 12:16:41,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20b5d5b20/484f100d40c147418a0608328595bf3c/FLAGeac5e7e41 [2020-10-29 12:16:41,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20b5d5b20/484f100d40c147418a0608328595bf3c [2020-10-29 12:16:41,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:16:41,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:16:41,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:41,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:16:41,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:16:41,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:41" (1/1) ... [2020-10-29 12:16:41,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16d6014c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:41, skipping insertion in model container [2020-10-29 12:16:41,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:16:41" (1/1) ... [2020-10-29 12:16:41,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:16:42,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:16:42,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:42,223 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:16:42,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:16:42,266 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:16:42,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42 WrapperNode [2020-10-29 12:16:42,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:16:42,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:16:42,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:16:42,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:16:42,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... [2020-10-29 12:16:42,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... [2020-10-29 12:16:42,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... [2020-10-29 12:16:42,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... [2020-10-29 12:16:42,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... [2020-10-29 12:16:42,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... [2020-10-29 12:16:42,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... [2020-10-29 12:16:42,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:16:42,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:16:42,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:16:42,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:16:42,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:16:42,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:16:42,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:16:42,409 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:16:42,410 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-29 12:16:42,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:16:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:16:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:16:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 12:16:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 12:16:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:16:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:16:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 12:16:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-29 12:16:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:16:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:16:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:16:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:16:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:16:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:16:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:16:42,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:16:42,829 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 12:16:42,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:42 BoogieIcfgContainer [2020-10-29 12:16:42,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:16:42,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:16:42,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:16:42,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:16:42,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:16:41" (1/3) ... [2020-10-29 12:16:42,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbbd942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:42, skipping insertion in model container [2020-10-29 12:16:42,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:16:42" (2/3) ... [2020-10-29 12:16:42,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbbd942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:16:42, skipping insertion in model container [2020-10-29 12:16:42,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:16:42" (3/3) ... [2020-10-29 12:16:42,844 INFO L111 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2020-10-29 12:16:42,859 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:16:42,865 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:16:42,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:16:42,915 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:16:42,915 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:16:42,916 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:16:42,916 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:16:42,916 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:16:42,916 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:16:42,916 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:16:42,916 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:16:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-29 12:16:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 12:16:42,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:42,947 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:42,948 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:42,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:42,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1900796497, now seen corresponding path program 1 times [2020-10-29 12:16:42,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:42,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263490189] [2020-10-29 12:16:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:44,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:44,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:16:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:16:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-29 12:16:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:44,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:16:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:16:44,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:16:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:45,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:45,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:45,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:16:45,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:45,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:45,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:45,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:45,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:45,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:16:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:45,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:45,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 12:16:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:45,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:45,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 12:16:45,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:45,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:16:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:45,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:16:45,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:45,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:45,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:16:45,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:16:45,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263490189] [2020-10-29 12:16:45,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:16:45,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:16:45,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353833088] [2020-10-29 12:16:45,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:16:45,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:16:45,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:45,518 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 11 states. [2020-10-29 12:16:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:46,135 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2020-10-29 12:16:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:16:46,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-29 12:16:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:46,149 INFO L225 Difference]: With dead ends: 87 [2020-10-29 12:16:46,150 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 12:16:46,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:16:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 12:16:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-10-29 12:16:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:16:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-10-29 12:16:46,242 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 34 [2020-10-29 12:16:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:46,242 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-10-29 12:16:46,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:16:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-10-29 12:16:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 12:16:46,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:46,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:46,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:16:46,246 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1502494865, now seen corresponding path program 1 times [2020-10-29 12:16:46,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:46,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921623701] [2020-10-29 12:16:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:46,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:16:47,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-29 12:16:47,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:47,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:16:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:16:47,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:47,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:16:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:47,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:16:47,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:16:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:16:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:16:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 12:16:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:47,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:47,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:16:47,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:16:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:16:47,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:16:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:47,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:16:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:16:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 12:16:47,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921623701] [2020-10-29 12:16:47,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:47,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:16:47,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521189189] [2020-10-29 12:16:47,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:16:47,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:47,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:16:47,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:16:47,743 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 5 states. [2020-10-29 12:16:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:47,896 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-10-29 12:16:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:16:47,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-29 12:16:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:47,898 INFO L225 Difference]: With dead ends: 62 [2020-10-29 12:16:47,898 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:16:47,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:47,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:16:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-29 12:16:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 12:16:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-29 12:16:47,907 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 36 [2020-10-29 12:16:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:47,908 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-29 12:16:47,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:16:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-29 12:16:47,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 12:16:47,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:47,910 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:47,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:16:47,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1194393741, now seen corresponding path program 2 times [2020-10-29 12:16:47,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:47,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001860132] [2020-10-29 12:16:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 12:16:52,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 12:16:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 12:16:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:52,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:52,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:52,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:16:52,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:52,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:52,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:53,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:16:53,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:16:53,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:53,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:53,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 12:16:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:53,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:16:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:16:53,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:53,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:53,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:53,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 12:16:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:53,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:16:53,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:53,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:16:53,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:53,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:16:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:53,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:16:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 12:16:53,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001860132] [2020-10-29 12:16:53,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:53,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:16:53,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383667281] [2020-10-29 12:16:53,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:16:53,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:53,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:16:53,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:16:53,137 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-29 12:16:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:53,397 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-29 12:16:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:16:53,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2020-10-29 12:16:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:53,399 INFO L225 Difference]: With dead ends: 56 [2020-10-29 12:16:53,399 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 12:16:53,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:16:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 12:16:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-29 12:16:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 12:16:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-29 12:16:53,417 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-29 12:16:53,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:53,417 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-29 12:16:53,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:16:53,418 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-29 12:16:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 12:16:53,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:53,424 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:53,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:16:53,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:53,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1945310827, now seen corresponding path program 3 times [2020-10-29 12:16:53,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:53,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384274263] [2020-10-29 12:16:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:53,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:53,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 12:16:58,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:16:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:16:58,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 12:16:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:16:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:16:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:16:58,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:16:58,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:16:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:16:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:16:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:16:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:58,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:16:58,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:16:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 12:16:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:58,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:16:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:16:58,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:58,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:58,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 12:16:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:16:58,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:16:58,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:16:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:16:58,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:16:58,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:16:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:16:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:16:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:16:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:16:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-29 12:16:58,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384274263] [2020-10-29 12:16:58,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:16:58,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:16:58,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139517723] [2020-10-29 12:16:58,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:16:58,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:16:58,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:16:58,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:16:58,676 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 7 states. [2020-10-29 12:16:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:16:58,891 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-29 12:16:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:16:58,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-29 12:16:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:16:58,893 INFO L225 Difference]: With dead ends: 60 [2020-10-29 12:16:58,893 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 12:16:58,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:16:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 12:16:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-29 12:16:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:16:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-29 12:16:58,901 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 52 [2020-10-29 12:16:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:16:58,902 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-29 12:16:58,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:16:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-29 12:16:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 12:16:58,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:16:58,904 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:16:58,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:16:58,904 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:16:58,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:16:58,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2080502327, now seen corresponding path program 4 times [2020-10-29 12:16:58,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:16:58,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301193912] [2020-10-29 12:16:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:16:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:16:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:16:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:03,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 12:17:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:17:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:03,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 12:17:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:17:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:03,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:03,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:03,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:03,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:03,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:17:04,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:04,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:17:04,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:04,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 12:17:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:17:04,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:17:04,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:04,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 12:17:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:04,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 12:17:04,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:04,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:17:04,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:04,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:04,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 12:17:04,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301193912] [2020-10-29 12:17:04,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:04,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:17:04,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711879407] [2020-10-29 12:17:04,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:17:04,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:04,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:17:04,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:17:04,229 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2020-10-29 12:17:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:04,502 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-29 12:17:04,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:17:04,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-29 12:17:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:04,504 INFO L225 Difference]: With dead ends: 64 [2020-10-29 12:17:04,504 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:17:04,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:17:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-29 12:17:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 12:17:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-29 12:17:04,512 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 58 [2020-10-29 12:17:04,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:04,512 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-29 12:17:04,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:17:04,513 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-29 12:17:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 12:17:04,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:04,514 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:04,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:17:04,514 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:04,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1013073575, now seen corresponding path program 5 times [2020-10-29 12:17:04,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:04,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15404086] [2020-10-29 12:17:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:04,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:06,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 12:17:09,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 12:17:09,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:09,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:17:09,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:09,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:09,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:17:09,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:09,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:09,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:09,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:17:09,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:17:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:09,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 12:17:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:09,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:17:09,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:17:09,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:09,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 12:17:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:09,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:09,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 12:17:09,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 12:17:09,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:09,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 12:17:09,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15404086] [2020-10-29 12:17:09,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:09,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:17:09,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230896498] [2020-10-29 12:17:09,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:17:09,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:09,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:17:09,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:17:09,871 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 9 states. [2020-10-29 12:17:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:10,218 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-29 12:17:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:17:10,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 12:17:10,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:10,221 INFO L225 Difference]: With dead ends: 68 [2020-10-29 12:17:10,221 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 12:17:10,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:17:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 12:17:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-29 12:17:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 12:17:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 12:17:10,233 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-29 12:17:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:10,234 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 12:17:10,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:17:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 12:17:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 12:17:10,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:10,240 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:10,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:17:10,243 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:10,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:10,243 INFO L82 PathProgramCache]: Analyzing trace with hash 247996677, now seen corresponding path program 6 times [2020-10-29 12:17:10,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:10,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716466338] [2020-10-29 12:17:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 12:17:15,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:17:15,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 12:17:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:15,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:15,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:15,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:17:15,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:15,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:15,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:17:15,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:15,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 12:17:15,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:15,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:15,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 12:17:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:17:15,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 12:17:15,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:15,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:17:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:15,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:17:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:17:15,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:15,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:15,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:15,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:17:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-29 12:17:15,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716466338] [2020-10-29 12:17:15,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:15,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:17:15,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584107197] [2020-10-29 12:17:15,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:17:15,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:15,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:17:15,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:17:15,592 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 10 states. [2020-10-29 12:17:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:15,927 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-29 12:17:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:17:15,928 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-29 12:17:15,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:15,929 INFO L225 Difference]: With dead ends: 72 [2020-10-29 12:17:15,929 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 12:17:15,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-29 12:17:15,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 12:17:15,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-29 12:17:15,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:17:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 12:17:15,937 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 70 [2020-10-29 12:17:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:15,937 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 12:17:15,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:17:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 12:17:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 12:17:15,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:15,939 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:15,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:17:15,939 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash 258997475, now seen corresponding path program 7 times [2020-10-29 12:17:15,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:15,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031178623] [2020-10-29 12:17:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:16,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:19,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:20,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 12:17:20,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 12:17:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:20,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 12:17:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:20,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:21,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:21,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:17:21,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:21,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:21,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:21,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:17:21,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 12:17:21,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:21,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:21,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:17:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:17:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:17:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 12:17:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 12:17:21,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:17:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:21,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-29 12:17:21,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031178623] [2020-10-29 12:17:21,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:21,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:17:21,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51426497] [2020-10-29 12:17:21,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:21,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:21,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:21,342 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 11 states. [2020-10-29 12:17:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:21,737 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-29 12:17:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:17:21,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-10-29 12:17:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:21,739 INFO L225 Difference]: With dead ends: 76 [2020-10-29 12:17:21,739 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 12:17:21,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:17:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 12:17:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-29 12:17:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 12:17:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 12:17:21,749 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 76 [2020-10-29 12:17:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:21,750 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 12:17:21,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:17:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 12:17:21,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 12:17:21,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:21,751 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:21,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:17:21,751 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:21,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1798453825, now seen corresponding path program 8 times [2020-10-29 12:17:21,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:21,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582059291] [2020-10-29 12:17:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 12:17:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 12:17:26,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 12:17:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:26,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:26,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:26,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:26,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:26,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:26,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:17:26,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 12:17:26,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:26,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:26,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:26,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 12:17:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:17:27,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 12:17:27,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:27,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:27,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:17:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:27,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:27,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 12:17:27,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582059291] [2020-10-29 12:17:27,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:27,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:17:27,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119792262] [2020-10-29 12:17:27,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:17:27,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:27,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:17:27,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:27,195 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 12 states. [2020-10-29 12:17:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:27,669 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-29 12:17:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:17:27,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 12:17:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:27,671 INFO L225 Difference]: With dead ends: 80 [2020-10-29 12:17:27,671 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 12:17:27,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-29 12:17:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 12:17:27,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-29 12:17:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 12:17:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-29 12:17:27,680 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 82 [2020-10-29 12:17:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:27,680 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-29 12:17:27,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:17:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-29 12:17:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:17:27,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:27,681 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:27,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:17:27,682 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1568618783, now seen corresponding path program 9 times [2020-10-29 12:17:27,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:27,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459991239] [2020-10-29 12:17:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:32,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:32,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:32,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:32,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:32,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:32,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:32,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:32,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:32,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 12:17:32,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:32,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:32,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:32,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-29 12:17:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 12:17:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:33,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 12:17:33,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459991239] [2020-10-29 12:17:33,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:33,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:17:33,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172019919] [2020-10-29 12:17:33,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:17:33,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:33,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:17:33,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:33,137 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-10-29 12:17:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:33,655 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-29 12:17:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:17:33,655 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 88 [2020-10-29 12:17:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:33,656 INFO L225 Difference]: With dead ends: 83 [2020-10-29 12:17:33,657 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 12:17:33,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:17:33,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 12:17:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-29 12:17:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 12:17:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-29 12:17:33,674 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 88 [2020-10-29 12:17:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:33,678 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-29 12:17:33,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:17:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-29 12:17:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:17:33,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:33,680 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:33,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:17:33,680 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1503700611, now seen corresponding path program 10 times [2020-10-29 12:17:33,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:33,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146220313] [2020-10-29 12:17:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:33,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:17:34,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:34,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 12:17:34,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:34,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:17:34,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:34,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:34,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 12:17:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:34,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:34,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:34,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:17:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:34,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:17:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 12:17:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:34,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:17:34,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:34,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146220313] [2020-10-29 12:17:34,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:17:34,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:17:34,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897680752] [2020-10-29 12:17:34,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:17:34,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:34,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:17:34,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:17:34,145 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 4 states. [2020-10-29 12:17:34,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:34,236 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-29 12:17:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:17:34,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-10-29 12:17:34,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:34,237 INFO L225 Difference]: With dead ends: 88 [2020-10-29 12:17:34,237 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 12:17:34,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:17:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 12:17:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-29 12:17:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 12:17:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-29 12:17:34,250 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 94 [2020-10-29 12:17:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:34,251 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-29 12:17:34,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:17:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-29 12:17:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:17:34,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:34,252 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:34,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:17:34,252 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:34,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:34,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1036814815, now seen corresponding path program 1 times [2020-10-29 12:17:34,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:34,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393755291] [2020-10-29 12:17:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:17:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:34,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:17:34,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 12:17:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:34,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 12:17:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 12:17:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:34,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:34,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:34,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:34,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:34,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:34,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:34,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:34,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393755291] [2020-10-29 12:17:34,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:34,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:17:34,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781578313] [2020-10-29 12:17:34,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:17:34,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:34,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:17:34,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:17:34,838 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-10-29 12:17:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:34,935 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-10-29 12:17:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:17:34,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-29 12:17:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:34,936 INFO L225 Difference]: With dead ends: 90 [2020-10-29 12:17:34,936 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 12:17:34,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:17:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 12:17:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-29 12:17:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 12:17:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-29 12:17:34,944 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 96 [2020-10-29 12:17:34,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:34,944 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-29 12:17:34,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:17:34,945 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-29 12:17:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 12:17:34,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:34,946 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:34,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:17:34,946 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:34,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1364252223, now seen corresponding path program 2 times [2020-10-29 12:17:34,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:34,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023206419] [2020-10-29 12:17:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:17:36,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-29 12:17:36,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:36,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:36,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 12:17:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:36,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:17:36,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:36,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 12:17:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:36,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:17:36,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:17:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:36,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:17:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:36,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:36,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023206419] [2020-10-29 12:17:36,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:36,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:17:36,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713090824] [2020-10-29 12:17:36,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:17:36,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:36,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:17:36,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:17:36,443 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2020-10-29 12:17:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:36,542 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-29 12:17:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:17:36,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-29 12:17:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:36,543 INFO L225 Difference]: With dead ends: 92 [2020-10-29 12:17:36,543 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 12:17:36,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:17:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 12:17:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-29 12:17:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 12:17:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-29 12:17:36,562 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 98 [2020-10-29 12:17:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:36,562 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-29 12:17:36,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:17:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-29 12:17:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 12:17:36,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:36,564 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:36,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:17:36,566 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:36,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1902729507, now seen corresponding path program 3 times [2020-10-29 12:17:36,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:36,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464301451] [2020-10-29 12:17:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:37,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:37,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:37,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:37,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 12:17:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:37,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:17:37,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:17:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:37,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:17:37,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:37,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:17:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:37,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:17:37,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:37,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:37,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:37,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464301451] [2020-10-29 12:17:37,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:37,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:17:37,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257527760] [2020-10-29 12:17:37,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:17:37,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:37,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:17:37,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:17:37,484 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 7 states. [2020-10-29 12:17:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:37,612 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-10-29 12:17:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:17:37,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-29 12:17:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:37,613 INFO L225 Difference]: With dead ends: 94 [2020-10-29 12:17:37,614 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 12:17:37,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:17:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 12:17:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-29 12:17:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 12:17:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-29 12:17:37,621 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 100 [2020-10-29 12:17:37,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:37,621 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-29 12:17:37,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:17:37,622 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-29 12:17:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 12:17:37,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:37,624 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:37,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:17:37,624 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:37,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1851078661, now seen corresponding path program 4 times [2020-10-29 12:17:37,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:37,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517308508] [2020-10-29 12:17:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:17:39,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:39,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1577 [2020-10-29 12:17:39,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:39,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:39,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:39,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:17:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:39,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 12:17:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:39,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:39,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:39,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 12:17:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:39,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:17:39,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:17:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:39,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:39,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:39,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:39,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:39,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517308508] [2020-10-29 12:17:39,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:39,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:17:39,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333741657] [2020-10-29 12:17:39,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:17:39,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:17:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:17:39,389 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 8 states. [2020-10-29 12:17:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:39,537 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-29 12:17:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:17:39,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2020-10-29 12:17:39,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:39,538 INFO L225 Difference]: With dead ends: 96 [2020-10-29 12:17:39,538 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 12:17:39,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:17:39,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 12:17:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-29 12:17:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 12:17:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-29 12:17:39,556 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 102 [2020-10-29 12:17:39,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:39,556 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-29 12:17:39,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:17:39,557 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-29 12:17:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 12:17:39,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:39,558 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:39,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:17:39,559 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:39,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:39,559 INFO L82 PathProgramCache]: Analyzing trace with hash -540744089, now seen corresponding path program 5 times [2020-10-29 12:17:39,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:39,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866839694] [2020-10-29 12:17:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:39,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:40,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:41,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 12:17:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:41,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:41,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:41,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:41,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 12:17:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:41,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:41,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:17:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:41,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:41,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:41,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:17:41,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:41,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:41,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:41,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:41,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866839694] [2020-10-29 12:17:41,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:41,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:17:41,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976200877] [2020-10-29 12:17:41,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:17:41,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:41,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:17:41,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:17:41,132 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2020-10-29 12:17:41,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:41,294 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-29 12:17:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:17:41,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 12:17:41,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:41,296 INFO L225 Difference]: With dead ends: 98 [2020-10-29 12:17:41,296 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 12:17:41,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:17:41,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 12:17:41,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-29 12:17:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 12:17:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-29 12:17:41,307 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 104 [2020-10-29 12:17:41,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:41,307 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-29 12:17:41,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:17:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-29 12:17:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 12:17:41,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:41,309 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:41,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:17:41,309 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:41,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1274903479, now seen corresponding path program 6 times [2020-10-29 12:17:41,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:41,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510116156] [2020-10-29 12:17:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:43,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 12:17:43,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:43,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1934 [2020-10-29 12:17:43,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:43,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:43,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:43,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:17:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:43,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:43,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 12:17:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:43,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:43,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:43,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:43,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:43,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:43,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 12:17:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:43,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:17:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:43,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:43,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:43,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:43,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:43,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:43,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:43,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510116156] [2020-10-29 12:17:43,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:43,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:17:43,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504444889] [2020-10-29 12:17:43,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:17:43,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:17:43,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:17:43,431 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 10 states. [2020-10-29 12:17:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:43,591 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2020-10-29 12:17:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:17:43,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-29 12:17:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:43,593 INFO L225 Difference]: With dead ends: 100 [2020-10-29 12:17:43,593 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 12:17:43,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:17:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 12:17:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-29 12:17:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 12:17:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-29 12:17:43,600 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 106 [2020-10-29 12:17:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:43,600 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-29 12:17:43,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:17:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-29 12:17:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 12:17:43,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:43,602 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:43,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 12:17:43,602 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:43,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1867526571, now seen corresponding path program 7 times [2020-10-29 12:17:43,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:43,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054666982] [2020-10-29 12:17:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 12:17:45,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1887 [2020-10-29 12:17:45,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:17:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:17:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 12:17:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:45,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:45,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 12:17:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:45,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:45,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:17:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:45,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:45,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:45,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:45,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:45,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054666982] [2020-10-29 12:17:45,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:45,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:17:45,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919457205] [2020-10-29 12:17:45,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:17:45,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:45,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:17:45,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:45,707 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 11 states. [2020-10-29 12:17:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:45,878 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-10-29 12:17:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:17:45,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-29 12:17:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:45,880 INFO L225 Difference]: With dead ends: 102 [2020-10-29 12:17:45,880 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 12:17:45,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:17:45,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 12:17:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-29 12:17:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 12:17:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-29 12:17:45,893 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 108 [2020-10-29 12:17:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:45,894 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-29 12:17:45,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:17:45,896 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-29 12:17:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 12:17:45,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:45,897 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:45,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 12:17:45,898 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:45,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1914171763, now seen corresponding path program 8 times [2020-10-29 12:17:45,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:45,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432114076] [2020-10-29 12:17:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:48,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 12:17:48,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2478 [2020-10-29 12:17:48,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:48,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:17:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:48,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:17:48,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:48,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:48,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:48,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 12:17:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 12:17:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:48,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:48,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:17:48,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:48,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:17:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:48,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:48,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:48,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:48,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:48,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:48,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:48,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432114076] [2020-10-29 12:17:48,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:48,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:17:48,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73049287] [2020-10-29 12:17:48,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:17:48,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:48,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:17:48,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:48,608 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 12 states. [2020-10-29 12:17:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:48,750 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2020-10-29 12:17:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:17:48,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 110 [2020-10-29 12:17:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:48,751 INFO L225 Difference]: With dead ends: 104 [2020-10-29 12:17:48,751 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 12:17:48,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:17:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 12:17:48,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-29 12:17:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 12:17:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-10-29 12:17:48,758 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 110 [2020-10-29 12:17:48,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:48,760 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-10-29 12:17:48,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:17:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-10-29 12:17:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 12:17:48,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:48,762 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:48,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 12:17:48,767 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1711028975, now seen corresponding path program 9 times [2020-10-29 12:17:48,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:48,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101798662] [2020-10-29 12:17:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 12:17:51,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:17:51,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2354 [2020-10-29 12:17:51,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:17:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:17:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:17:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:51,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:51,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 12:17:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:51,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:51,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 12:17:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:51,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:51,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:17:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:51,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:17:51,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:51,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 12:17:51,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101798662] [2020-10-29 12:17:51,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:51,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:17:51,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665975210] [2020-10-29 12:17:51,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:17:51,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:51,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:17:51,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:51,381 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 13 states. [2020-10-29 12:17:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:51,555 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2020-10-29 12:17:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:17:51,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2020-10-29 12:17:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:51,557 INFO L225 Difference]: With dead ends: 105 [2020-10-29 12:17:51,557 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 12:17:51,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:17:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 12:17:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-29 12:17:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 12:17:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-29 12:17:51,565 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 112 [2020-10-29 12:17:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:51,565 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-29 12:17:51,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:17:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-29 12:17:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 12:17:51,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:51,566 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:51,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 12:17:51,567 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1984506159, now seen corresponding path program 10 times [2020-10-29 12:17:51,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:51,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016681684] [2020-10-29 12:17:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 12:17:51,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 12:17:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:17:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:17:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:17:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:51,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:51,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:51,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:17:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:17:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:17:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:51,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:17:51,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:51,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:17:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:51,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:51,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:51,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:51,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:51,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:17:51,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016681684] [2020-10-29 12:17:51,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:17:51,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:17:51,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155082067] [2020-10-29 12:17:51,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:17:51,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:51,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:17:51,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:17:51,928 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 4 states. [2020-10-29 12:17:52,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:52,003 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-29 12:17:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 12:17:52,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-29 12:17:52,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:52,005 INFO L225 Difference]: With dead ends: 101 [2020-10-29 12:17:52,005 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 12:17:52,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:17:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 12:17:52,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-29 12:17:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 12:17:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-29 12:17:52,011 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 114 [2020-10-29 12:17:52,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:52,012 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-29 12:17:52,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:17:52,012 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-29 12:17:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 12:17:52,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:52,013 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:52,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 12:17:52,014 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:52,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:52,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1443310159, now seen corresponding path program 1 times [2020-10-29 12:17:52,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:52,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882545365] [2020-10-29 12:17:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:17:52,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-29 12:17:52,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:17:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:17:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 12:17:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:17:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:52,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:52,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:17:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:52,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:17:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:52,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:17:52,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882545365] [2020-10-29 12:17:52,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:52,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 12:17:52,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146637107] [2020-10-29 12:17:52,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:17:52,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:52,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:17:52,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:17:52,494 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-10-29 12:17:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:52,592 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-29 12:17:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:17:52,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-29 12:17:52,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:52,595 INFO L225 Difference]: With dead ends: 103 [2020-10-29 12:17:52,595 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 12:17:52,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:17:52,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 12:17:52,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-29 12:17:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 12:17:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-29 12:17:52,602 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 116 [2020-10-29 12:17:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:52,602 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-29 12:17:52,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:17:52,602 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-29 12:17:52,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 12:17:52,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:52,604 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:52,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 12:17:52,604 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:52,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1334875725, now seen corresponding path program 2 times [2020-10-29 12:17:52,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:52,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319888207] [2020-10-29 12:17:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:52,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:53,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 12:17:53,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:53,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-29 12:17:53,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:53,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:17:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:17:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:17:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:53,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:53,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:53,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:53,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:53,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:17:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:53,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:53,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:17:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:53,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-29 12:17:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:53,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:53,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:53,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:17:53,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:53,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:53,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:17:53,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319888207] [2020-10-29 12:17:53,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:53,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 12:17:53,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047747512] [2020-10-29 12:17:53,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:17:53,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:17:53,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:17:53,271 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 6 states. [2020-10-29 12:17:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:53,382 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-29 12:17:53,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:17:53,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-29 12:17:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:53,384 INFO L225 Difference]: With dead ends: 105 [2020-10-29 12:17:53,384 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 12:17:53,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:17:53,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 12:17:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-29 12:17:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 12:17:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-29 12:17:53,392 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 118 [2020-10-29 12:17:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:53,392 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-29 12:17:53,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:17:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-29 12:17:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 12:17:53,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:53,394 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:53,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 12:17:53,394 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:53,395 INFO L82 PathProgramCache]: Analyzing trace with hash 208599755, now seen corresponding path program 3 times [2020-10-29 12:17:53,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:53,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787330810] [2020-10-29 12:17:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:53,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 12:17:54,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-29 12:17:54,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:17:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:17:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:17:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:17:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:54,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:17:54,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:54,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:17:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:54,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:54,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:54,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:54,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:54,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 12:17:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:54,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:54,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:17:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:54,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:54,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:17:54,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787330810] [2020-10-29 12:17:54,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:54,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:17:54,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949573592] [2020-10-29 12:17:54,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:17:54,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:54,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:17:54,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:17:54,401 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 7 states. [2020-10-29 12:17:54,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:54,535 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-29 12:17:54,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:17:54,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-29 12:17:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:54,536 INFO L225 Difference]: With dead ends: 107 [2020-10-29 12:17:54,537 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 12:17:54,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:17:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 12:17:54,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-29 12:17:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 12:17:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-29 12:17:54,542 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-29 12:17:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:54,543 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-29 12:17:54,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:17:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-29 12:17:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 12:17:54,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:54,547 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:54,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 12:17:54,549 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:54,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:54,550 INFO L82 PathProgramCache]: Analyzing trace with hash 189151177, now seen corresponding path program 4 times [2020-10-29 12:17:54,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:54,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404506657] [2020-10-29 12:17:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:54,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:55,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:55,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 12:17:55,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-29 12:17:55,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:55,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:17:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:17:55,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:17:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:55,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:55,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:17:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:55,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:55,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:17:55,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:55,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:55,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:55,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:55,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:17:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:55,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:55,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:55,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:55,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:17:55,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:55,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:55,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:55,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:55,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 12:17:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:17:55,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404506657] [2020-10-29 12:17:55,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:55,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 12:17:55,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264977370] [2020-10-29 12:17:55,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:17:55,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:55,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:17:55,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:17:55,952 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 8 states. [2020-10-29 12:17:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:56,106 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-29 12:17:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:17:56,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-29 12:17:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:56,107 INFO L225 Difference]: With dead ends: 109 [2020-10-29 12:17:56,107 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 12:17:56,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:17:56,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 12:17:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-29 12:17:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 12:17:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-29 12:17:56,117 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-29 12:17:56,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:56,118 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-29 12:17:56,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:17:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-29 12:17:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 12:17:56,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:56,121 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:56,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 12:17:56,121 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:56,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:56,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1321063097, now seen corresponding path program 5 times [2020-10-29 12:17:56,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:56,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283519971] [2020-10-29 12:17:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:56,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:57,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 12:17:57,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1458 [2020-10-29 12:17:57,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:57,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:17:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:17:57,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 12:17:57,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:57,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:17:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:57,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:57,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:57,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:17:57,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:57,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:57,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:17:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:57,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:57,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:57,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:57,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:57,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:57,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-29 12:17:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:57,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:17:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:57,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:17:57,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283519971] [2020-10-29 12:17:57,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:57,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:17:57,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440021253] [2020-10-29 12:17:57,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:17:57,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:17:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:17:57,752 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 9 states. [2020-10-29 12:17:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:57,896 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-29 12:17:57,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:17:57,896 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 124 [2020-10-29 12:17:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:57,898 INFO L225 Difference]: With dead ends: 111 [2020-10-29 12:17:57,898 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 12:17:57,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:17:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 12:17:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-29 12:17:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 12:17:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-29 12:17:57,906 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-29 12:17:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:57,906 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-29 12:17:57,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:17:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-29 12:17:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 12:17:57,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:57,907 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:57,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 12:17:57,907 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:57,907 INFO L82 PathProgramCache]: Analyzing trace with hash -938034363, now seen corresponding path program 6 times [2020-10-29 12:17:57,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:57,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565785192] [2020-10-29 12:17:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:17:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:17:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:17:59,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:17:59,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:59,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:17:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:59,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:17:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:59,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:17:59,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:17:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:59,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 12:17:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:17:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:17:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:17:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:17:59,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565785192] [2020-10-29 12:17:59,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:17:59,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:17:59,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615532934] [2020-10-29 12:17:59,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:17:59,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:17:59,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:17:59,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:17:59,531 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 10 states. [2020-10-29 12:17:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:17:59,680 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-29 12:17:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:17:59,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-10-29 12:17:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:17:59,682 INFO L225 Difference]: With dead ends: 113 [2020-10-29 12:17:59,682 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 12:17:59,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:17:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 12:17:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-29 12:17:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 12:17:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-29 12:17:59,689 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-29 12:17:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:17:59,690 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-29 12:17:59,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:17:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-29 12:17:59,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 12:17:59,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:17:59,691 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:17:59,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 12:17:59,691 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:17:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:17:59,692 INFO L82 PathProgramCache]: Analyzing trace with hash 2080358851, now seen corresponding path program 7 times [2020-10-29 12:17:59,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:17:59,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383753116] [2020-10-29 12:17:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:17:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:17:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 12:18:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:01,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-10-29 12:18:01,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:01,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:18:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:18:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:18:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:01,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:01,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:01,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:18:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:01,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:01,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:18:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:01,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 12:18:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:01,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:18:01,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383753116] [2020-10-29 12:18:01,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:01,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:18:01,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413179743] [2020-10-29 12:18:01,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:18:01,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:01,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:18:01,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:18:01,850 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 11 states. [2020-10-29 12:18:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:01,970 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-29 12:18:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:18:01,971 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-10-29 12:18:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:01,972 INFO L225 Difference]: With dead ends: 115 [2020-10-29 12:18:01,972 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 12:18:01,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:18:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 12:18:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-29 12:18:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 12:18:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-29 12:18:01,982 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-29 12:18:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:01,982 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-29 12:18:01,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:18:01,982 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-29 12:18:01,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 12:18:01,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:01,983 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:01,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 12:18:01,984 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:01,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:01,985 INFO L82 PathProgramCache]: Analyzing trace with hash -641654591, now seen corresponding path program 8 times [2020-10-29 12:18:01,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:01,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872125706] [2020-10-29 12:18:01,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:02,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2591 [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 12:18:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:18:04,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:04,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:04,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:18:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:04,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:04,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:04,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:04,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:18:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 12:18:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:18:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 12:18:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-29 12:18:04,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872125706] [2020-10-29 12:18:04,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:04,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:18:04,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973926820] [2020-10-29 12:18:04,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:18:04,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:18:04,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:18:04,816 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 12 states. [2020-10-29 12:18:04,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:04,941 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2020-10-29 12:18:04,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:18:04,941 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-10-29 12:18:04,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:04,943 INFO L225 Difference]: With dead ends: 116 [2020-10-29 12:18:04,943 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 12:18:04,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:18:04,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 12:18:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-29 12:18:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 12:18:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-29 12:18:04,949 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-29 12:18:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:04,950 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-29 12:18:04,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:18:04,950 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-29 12:18:04,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 12:18:04,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:04,951 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:18:04,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 12:18:04,951 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:04,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:04,951 INFO L82 PathProgramCache]: Analyzing trace with hash -861489089, now seen corresponding path program 9 times [2020-10-29 12:18:04,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:04,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584173714] [2020-10-29 12:18:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:13,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 12:18:13,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:13,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8659 [2020-10-29 12:18:13,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:13,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-29 12:18:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 12:18:13,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 12:18:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:15,526 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2020-10-29 12:18:15,747 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2020-10-29 12:18:16,007 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-29 12:18:16,239 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-10-29 12:18:16,430 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-29 12:18:16,640 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-29 12:18:16,862 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-29 12:18:17,092 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-29 12:18:17,313 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-29 12:18:17,557 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2020-10-29 12:18:17,797 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-29 12:18:18,169 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2020-10-29 12:18:20,608 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-10-29 12:18:21,044 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-10-29 12:18:21,440 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-29 12:18:21,745 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-10-29 12:18:22,143 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-29 12:18:22,421 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2020-10-29 12:18:22,767 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-29 12:18:32,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:32,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 12:18:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:34,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:37,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:18:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4879 [2020-10-29 12:18:37,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:37,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 12:18:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:18:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:46,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:47,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:50,334 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-29 12:18:50,747 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-29 12:18:52,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 12:18:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:52,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:55,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:55,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 12:18:55,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:18:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-29 12:18:55,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:55,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 12:18:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 12:18:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 73 proven. 938 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-29 12:18:59,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584173714] [2020-10-29 12:18:59,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:18:59,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-29 12:18:59,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430420578] [2020-10-29 12:18:59,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-29 12:18:59,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:59,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-29 12:18:59,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=3907, Unknown=5, NotChecked=0, Total=4160 [2020-10-29 12:18:59,065 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 65 states. [2020-10-29 12:19:05,195 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 100 [2020-10-29 12:19:06,340 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-29 12:19:10,106 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-10-29 12:19:17,517 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-10-29 12:19:29,091 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2020-10-29 12:19:32,388 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-29 12:19:33,570 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-29 12:19:34,760 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-29 12:19:40,117 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-29 12:19:45,469 WARN L193 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-29 12:19:46,794 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-29 12:19:58,884 WARN L193 SmtUtils]: Spent 10.62 s on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-29 12:20:06,397 WARN L193 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-29 12:20:13,756 WARN L193 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-29 12:20:14,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:14,008 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-10-29 12:20:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 12:20:14,010 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 132 [2020-10-29 12:20:14,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:14,012 INFO L225 Difference]: With dead ends: 94 [2020-10-29 12:20:14,012 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 12:20:14,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 76.1s TimeCoverageRelationStatistics Valid=527, Invalid=9168, Unknown=7, NotChecked=0, Total=9702 [2020-10-29 12:20:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 12:20:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-29 12:20:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 12:20:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-29 12:20:14,026 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-29 12:20:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:14,026 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-29 12:20:14,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-29 12:20:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-29 12:20:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 12:20:14,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:14,027 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:20:14,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 12:20:14,028 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:14,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1669044163, now seen corresponding path program 10 times [2020-10-29 12:20:14,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:14,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731486715] [2020-10-29 12:20:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking...