/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_minInArray_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:26:52,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:26:52,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:26:52,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:26:52,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:26:52,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:26:52,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:26:52,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:26:52,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:26:52,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:26:52,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:26:52,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:26:52,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:26:52,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:26:52,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:26:52,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:26:52,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:26:52,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:26:52,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:26:52,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:26:52,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:26:52,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:26:52,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:26:52,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:26:52,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:26:52,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:26:52,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:26:52,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:26:52,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:26:52,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:26:52,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:26:52,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:26:52,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:26:52,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:26:52,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:26:52,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:26:52,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:26:52,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:26:52,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:26:52,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:26:52,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:26:52,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:26:52,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:26:52,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:26:52,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:26:52,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:26:52,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:26:52,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:26:52,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:26:52,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:26:52,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:26:52,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:26:52,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:26:52,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:26:52,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:26:52,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:26:52,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:26:52,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:26:52,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:26:52,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:26:52,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:26:52,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:26:52,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:26:52,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:26:52,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:26:52,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:26:52,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:26:52,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:26:52,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:26:52,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:26:52,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:26:52,392 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:26:52,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:26:52,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:26:52,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:26:52,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:26:52,850 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:26:52,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_minInArray_ground-1.i [2020-10-27 14:26:52,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d58975e7d/19d98aa9ff794008a1012cefc41c6fb3/FLAGd9e169009 [2020-10-27 14:26:53,600 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:26:53,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_minInArray_ground-1.i [2020-10-27 14:26:53,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d58975e7d/19d98aa9ff794008a1012cefc41c6fb3/FLAGd9e169009 [2020-10-27 14:26:53,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d58975e7d/19d98aa9ff794008a1012cefc41c6fb3 [2020-10-27 14:26:53,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:26:53,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:26:53,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:26:53,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:26:53,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:26:53,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:26:53" (1/1) ... [2020-10-27 14:26:53,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338329c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:53, skipping insertion in model container [2020-10-27 14:26:53,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:26:53" (1/1) ... [2020-10-27 14:26:53,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:26:54,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:26:54,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:26:54,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:26:54,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:26:54,346 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:26:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54 WrapperNode [2020-10-27 14:26:54,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:26:54,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:26:54,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:26:54,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:26:54,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... [2020-10-27 14:26:54,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... [2020-10-27 14:26:54,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... [2020-10-27 14:26:54,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... [2020-10-27 14:26:54,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... [2020-10-27 14:26:54,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... [2020-10-27 14:26:54,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... [2020-10-27 14:26:54,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:26:54,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:26:54,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:26:54,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:26:54,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:26:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:26:54,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:26:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:26:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:26:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:26:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:26:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:26:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:26:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:26:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:26:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:26:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:26:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:26:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:26:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:26:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:26:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:26:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:26:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:26:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:26:54,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:26:54,853 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:26:54,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:26:54 BoogieIcfgContainer [2020-10-27 14:26:54,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:26:54,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:26:54,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:26:54,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:26:54,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:26:53" (1/3) ... [2020-10-27 14:26:54,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13309b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:26:54, skipping insertion in model container [2020-10-27 14:26:54,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:26:54" (2/3) ... [2020-10-27 14:26:54,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13309b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:26:54, skipping insertion in model container [2020-10-27 14:26:54,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:26:54" (3/3) ... [2020-10-27 14:26:54,866 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-1.i [2020-10-27 14:26:54,884 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:26:54,890 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:26:54,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:26:54,959 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:26:54,960 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:26:54,960 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:26:54,960 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:26:54,960 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:26:54,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:26:54,961 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:26:54,961 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:26:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-27 14:26:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:26:54,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:54,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:54,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:55,002 INFO L82 PathProgramCache]: Analyzing trace with hash -368075238, now seen corresponding path program 1 times [2020-10-27 14:26:55,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:55,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821805364] [2020-10-27 14:26:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:55,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:55,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:26:55,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:55,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 14:26:55,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 14:26:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:26:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:55,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:55,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:55,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:26:55,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:55,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:55,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:26:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:26:55,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821805364] [2020-10-27 14:26:55,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:26:55,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:26:55,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391581120] [2020-10-27 14:26:55,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:26:55,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:55,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:26:55,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:26:55,550 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-27 14:26:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:55,674 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2020-10-27 14:26:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:26:55,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-27 14:26:55,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:55,685 INFO L225 Difference]: With dead ends: 55 [2020-10-27 14:26:55,685 INFO L226 Difference]: Without dead ends: 25 [2020-10-27 14:26:55,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:26:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-27 14:26:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-27 14:26:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-27 14:26:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-27 14:26:55,735 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-10-27 14:26:55,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:55,736 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-27 14:26:55,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:26:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-27 14:26:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:26:55,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:55,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:55,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:26:55,738 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash 230860937, now seen corresponding path program 1 times [2020-10-27 14:26:55,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:55,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955509169] [2020-10-27 14:26:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:55,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:56,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:56,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:26:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-27 14:26:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:26:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:26:56,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:26:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:56,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:56,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:56,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:26:56,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:56,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:26:56,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955509169] [2020-10-27 14:26:56,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:26:56,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:26:56,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445497080] [2020-10-27 14:26:56,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:26:56,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:56,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:26:56,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:26:56,187 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2020-10-27 14:26:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:56,278 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-27 14:26:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:26:56,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 14:26:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:56,280 INFO L225 Difference]: With dead ends: 41 [2020-10-27 14:26:56,280 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:26:56,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:26:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:26:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-27 14:26:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:26:56,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-27 14:26:56,290 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2020-10-27 14:26:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:56,291 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-27 14:26:56,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:26:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-27 14:26:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 14:26:56,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:56,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:56,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:26:56,293 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:56,297 INFO L82 PathProgramCache]: Analyzing trace with hash -139042905, now seen corresponding path program 1 times [2020-10-27 14:26:56,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:56,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268647343] [2020-10-27 14:26:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:56,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:56,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:56,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:26:56,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:56,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-27 14:26:56,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:56,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:26:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:26:56,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:26:56,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:56,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:56,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:56,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:56,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:56,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:26:56,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:26:56,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268647343] [2020-10-27 14:26:56,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:56,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:26:56,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400239775] [2020-10-27 14:26:56,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:26:56,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:56,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:26:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:26:56,671 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-10-27 14:26:56,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:56,807 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-10-27 14:26:56,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:26:56,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-27 14:26:56,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:56,809 INFO L225 Difference]: With dead ends: 44 [2020-10-27 14:26:56,809 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:26:56,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:26:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:26:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-27 14:26:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:26:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:26:56,818 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2020-10-27 14:26:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:56,819 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:26:56,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:26:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:26:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:26:56,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:56,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:56,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:26:56,821 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:56,821 INFO L82 PathProgramCache]: Analyzing trace with hash 941681609, now seen corresponding path program 2 times [2020-10-27 14:26:56,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:56,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527837241] [2020-10-27 14:26:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 14:26:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:26:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-27 14:26:58,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:26:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:26:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:26:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:26:58,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:58,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:58,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:58,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:58,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:58,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:26:58,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:26:58,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527837241] [2020-10-27 14:26:58,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:58,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:26:58,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454767939] [2020-10-27 14:26:58,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:26:58,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:58,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:26:58,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:26:58,316 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 11 states. [2020-10-27 14:26:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:58,749 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-27 14:26:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:26:58,750 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-10-27 14:26:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:58,753 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:26:58,753 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 14:26:58,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:26:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 14:26:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2020-10-27 14:26:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 14:26:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-27 14:26:58,769 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 23 [2020-10-27 14:26:58,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:58,769 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-27 14:26:58,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:26:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-27 14:26:58,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:26:58,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:58,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:58,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:26:58,772 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:58,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1642746187, now seen corresponding path program 1 times [2020-10-27 14:26:58,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:58,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100920353] [2020-10-27 14:26:58,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:58,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:58,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:58,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 14:26:58,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:26:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 14:26:58,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:26:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:26:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:26:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:26:58,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:26:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:26:59,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:26:59,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:26:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:26:59,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:26:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:26:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:26:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:26:59,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:26:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:26:59,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100920353] [2020-10-27 14:26:59,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:26:59,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:26:59,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432612189] [2020-10-27 14:26:59,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:26:59,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:26:59,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:26:59,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:26:59,026 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 6 states. [2020-10-27 14:26:59,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:26:59,148 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-27 14:26:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:26:59,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-27 14:26:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:26:59,151 INFO L225 Difference]: With dead ends: 78 [2020-10-27 14:26:59,152 INFO L226 Difference]: Without dead ends: 58 [2020-10-27 14:26:59,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:26:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-27 14:26:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-27 14:26:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:26:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-27 14:26:59,162 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 23 [2020-10-27 14:26:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:26:59,162 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-27 14:26:59,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:26:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-27 14:26:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 14:26:59,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:26:59,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:26:59,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:26:59,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:26:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:26:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1730827367, now seen corresponding path program 3 times [2020-10-27 14:26:59,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:26:59,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384995617] [2020-10-27 14:26:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:26:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:26:59,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:26:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:00,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:00,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:27:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:27:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-27 14:27:00,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:27:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:27:00,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:00,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:00,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:00,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:00,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:00,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:00,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384995617] [2020-10-27 14:27:00,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:00,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:27:00,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279169054] [2020-10-27 14:27:00,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:27:00,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:00,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:27:00,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:27:00,739 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 13 states. [2020-10-27 14:27:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:01,242 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-10-27 14:27:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:27:01,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-27 14:27:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:01,244 INFO L225 Difference]: With dead ends: 81 [2020-10-27 14:27:01,244 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 14:27:01,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:27:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 14:27:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2020-10-27 14:27:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:27:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-27 14:27:01,255 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 26 [2020-10-27 14:27:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:01,256 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-27 14:27:01,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:27:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-27 14:27:01,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 14:27:01,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:01,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:01,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:27:01,258 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1420774695, now seen corresponding path program 2 times [2020-10-27 14:27:01,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:01,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240021584] [2020-10-27 14:27:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:01,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:27:01,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:01,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 14:27:01,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:27:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:01,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:27:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:01,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:01,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:01,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:01,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:01,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:27:01,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:01,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:01,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240021584] [2020-10-27 14:27:01,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:01,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:27:01,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577155092] [2020-10-27 14:27:01,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:27:01,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:01,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:27:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:27:01,537 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 7 states. [2020-10-27 14:27:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:01,668 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2020-10-27 14:27:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:27:01,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-27 14:27:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:01,670 INFO L225 Difference]: With dead ends: 87 [2020-10-27 14:27:01,670 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:27:01,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:27:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:27:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-27 14:27:01,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:27:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-10-27 14:27:01,684 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 26 [2020-10-27 14:27:01,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:01,685 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-10-27 14:27:01,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:27:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-10-27 14:27:01,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 14:27:01,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:01,686 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:01,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:27:01,687 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:01,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1377274933, now seen corresponding path program 3 times [2020-10-27 14:27:01,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:01,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718061375] [2020-10-27 14:27:01,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:01,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:27:01,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:01,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 14:27:01,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:27:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:27:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:01,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:01,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:01,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:01,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:01,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:01,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:01,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718061375] [2020-10-27 14:27:01,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:01,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:27:01,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254700065] [2020-10-27 14:27:01,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:27:01,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:01,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:27:01,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:27:01,958 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 8 states. [2020-10-27 14:27:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:02,071 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2020-10-27 14:27:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:27:02,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-27 14:27:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:02,073 INFO L225 Difference]: With dead ends: 96 [2020-10-27 14:27:02,074 INFO L226 Difference]: Without dead ends: 76 [2020-10-27 14:27:02,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:27:02,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-27 14:27:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-27 14:27:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 14:27:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2020-10-27 14:27:02,083 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 29 [2020-10-27 14:27:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:02,084 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2020-10-27 14:27:02,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:27:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2020-10-27 14:27:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:27:02,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:02,086 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:02,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:27:02,086 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:02,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1348461913, now seen corresponding path program 4 times [2020-10-27 14:27:02,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:02,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040447317] [2020-10-27 14:27:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:02,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:02,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:02,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:27:02,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-27 14:27:02,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:27:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:02,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:27:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:02,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:02,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:02,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:02,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:02,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:02,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:02,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040447317] [2020-10-27 14:27:02,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:02,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:27:02,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855047648] [2020-10-27 14:27:02,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:27:02,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:27:02,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:27:02,477 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand 9 states. [2020-10-27 14:27:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:02,590 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2020-10-27 14:27:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:27:02,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-27 14:27:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:02,592 INFO L225 Difference]: With dead ends: 105 [2020-10-27 14:27:02,592 INFO L226 Difference]: Without dead ends: 85 [2020-10-27 14:27:02,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:27:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-27 14:27:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2020-10-27 14:27:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:27:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2020-10-27 14:27:02,602 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 32 [2020-10-27 14:27:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:02,602 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2020-10-27 14:27:02,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:27:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2020-10-27 14:27:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:27:02,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:02,604 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:02,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:27:02,605 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:02,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1973242293, now seen corresponding path program 5 times [2020-10-27 14:27:02,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:02,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668147820] [2020-10-27 14:27:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:02,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:02,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:27:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-27 14:27:02,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:27:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:27:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:27:03,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:03,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:03,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:27:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:03,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:27:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:03,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668147820] [2020-10-27 14:27:03,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:03,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:27:03,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482407294] [2020-10-27 14:27:03,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:27:03,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:27:03,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:27:03,079 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand 10 states. [2020-10-27 14:27:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:03,276 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2020-10-27 14:27:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:27:03,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-27 14:27:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:03,282 INFO L225 Difference]: With dead ends: 114 [2020-10-27 14:27:03,282 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 14:27:03,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:27:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 14:27:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-10-27 14:27:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:27:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2020-10-27 14:27:03,310 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 35 [2020-10-27 14:27:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:03,311 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2020-10-27 14:27:03,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:27:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2020-10-27 14:27:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 14:27:03,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:03,312 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:03,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:27:03,313 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash -417282009, now seen corresponding path program 6 times [2020-10-27 14:27:03,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:03,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053476325] [2020-10-27 14:27:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:03,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:03,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:03,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:27:03,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-27 14:27:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:27:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:27:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:03,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053476325] [2020-10-27 14:27:03,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:03,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:27:03,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080011916] [2020-10-27 14:27:03,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:27:03,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:03,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:27:03,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:27:03,939 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand 11 states. [2020-10-27 14:27:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:04,069 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2020-10-27 14:27:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:27:04,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-27 14:27:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:04,071 INFO L225 Difference]: With dead ends: 123 [2020-10-27 14:27:04,071 INFO L226 Difference]: Without dead ends: 103 [2020-10-27 14:27:04,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:27:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-27 14:27:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-10-27 14:27:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 14:27:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2020-10-27 14:27:04,085 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 38 [2020-10-27 14:27:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:04,085 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2020-10-27 14:27:04,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:27:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2020-10-27 14:27:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:27:04,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:04,090 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:04,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:27:04,090 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1908480203, now seen corresponding path program 7 times [2020-10-27 14:27:04,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:04,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675961671] [2020-10-27 14:27:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:04,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:04,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 14:27:04,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-27 14:27:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:27:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:27:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:04,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:04,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:04,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:27:04,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:04,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675961671] [2020-10-27 14:27:04,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:04,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:27:04,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960545124] [2020-10-27 14:27:04,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:27:04,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:27:04,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:27:04,676 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand 12 states. [2020-10-27 14:27:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:04,856 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2020-10-27 14:27:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:27:04,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-27 14:27:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:04,858 INFO L225 Difference]: With dead ends: 132 [2020-10-27 14:27:04,858 INFO L226 Difference]: Without dead ends: 112 [2020-10-27 14:27:04,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:27:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-27 14:27:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2020-10-27 14:27:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 14:27:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2020-10-27 14:27:04,877 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 41 [2020-10-27 14:27:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:04,877 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2020-10-27 14:27:04,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:27:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2020-10-27 14:27:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 14:27:04,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:04,884 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:04,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:27:04,885 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:04,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2016848473, now seen corresponding path program 8 times [2020-10-27 14:27:04,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:04,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413771231] [2020-10-27 14:27:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:05,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:27:05,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-27 14:27:05,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:27:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:05,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:27:05,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:05,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:05,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:05,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:05,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:05,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413771231] [2020-10-27 14:27:05,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:05,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:27:05,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897955999] [2020-10-27 14:27:05,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:27:05,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:05,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:27:05,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:27:05,580 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand 13 states. [2020-10-27 14:27:05,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:05,728 INFO L93 Difference]: Finished difference Result 141 states and 178 transitions. [2020-10-27 14:27:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:27:05,729 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-10-27 14:27:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:05,730 INFO L225 Difference]: With dead ends: 141 [2020-10-27 14:27:05,730 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 14:27:05,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:27:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 14:27:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-10-27 14:27:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-27 14:27:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2020-10-27 14:27:05,743 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 44 [2020-10-27 14:27:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:05,744 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2020-10-27 14:27:05,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:27:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2020-10-27 14:27:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-27 14:27:05,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:05,748 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:05,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:27:05,749 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:05,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1886100299, now seen corresponding path program 9 times [2020-10-27 14:27:05,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:05,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618388422] [2020-10-27 14:27:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:06,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:27:06,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-27 14:27:06,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:27:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:27:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:06,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:06,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:06,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:27:06,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:27:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:06,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618388422] [2020-10-27 14:27:06,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:06,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:27:06,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847923091] [2020-10-27 14:27:06,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:27:06,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:27:06,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:27:06,608 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand 14 states. [2020-10-27 14:27:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:06,763 INFO L93 Difference]: Finished difference Result 150 states and 190 transitions. [2020-10-27 14:27:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:27:06,764 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-27 14:27:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:06,766 INFO L225 Difference]: With dead ends: 150 [2020-10-27 14:27:06,766 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:27:06,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:27:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:27:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2020-10-27 14:27:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-27 14:27:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2020-10-27 14:27:06,775 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 47 [2020-10-27 14:27:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:06,777 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2020-10-27 14:27:06,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:27:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2020-10-27 14:27:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:27:06,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:06,778 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:06,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:27:06,778 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:06,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1278329639, now seen corresponding path program 10 times [2020-10-27 14:27:06,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:06,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461424806] [2020-10-27 14:27:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:06,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:07,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:07,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:27:07,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 14:27:07,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:27:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:27:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:07,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:07,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:07,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:07,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:07,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461424806] [2020-10-27 14:27:07,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:07,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:27:07,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603204137] [2020-10-27 14:27:07,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:27:07,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:07,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:27:07,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:27:07,576 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand 15 states. [2020-10-27 14:27:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:07,763 INFO L93 Difference]: Finished difference Result 159 states and 202 transitions. [2020-10-27 14:27:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:27:07,764 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-27 14:27:07,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:07,766 INFO L225 Difference]: With dead ends: 159 [2020-10-27 14:27:07,766 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 14:27:07,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:27:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 14:27:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2020-10-27 14:27:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-27 14:27:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 170 transitions. [2020-10-27 14:27:07,775 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 170 transitions. Word has length 50 [2020-10-27 14:27:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:07,775 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 170 transitions. [2020-10-27 14:27:07,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:27:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 170 transitions. [2020-10-27 14:27:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 14:27:07,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:07,777 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:07,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:27:07,777 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:07,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1530249781, now seen corresponding path program 11 times [2020-10-27 14:27:07,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:07,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924450263] [2020-10-27 14:27:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:07,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:08,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:27:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-27 14:27:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:27:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:27:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:08,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:08,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:08,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:08,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:08,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924450263] [2020-10-27 14:27:08,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:08,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:27:08,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752690549] [2020-10-27 14:27:08,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:27:08,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:08,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:27:08,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:27:08,702 INFO L87 Difference]: Start difference. First operand 133 states and 170 transitions. Second operand 16 states. [2020-10-27 14:27:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:08,909 INFO L93 Difference]: Finished difference Result 168 states and 214 transitions. [2020-10-27 14:27:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:27:08,910 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-27 14:27:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:08,911 INFO L225 Difference]: With dead ends: 168 [2020-10-27 14:27:08,911 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 14:27:08,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:27:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 14:27:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2020-10-27 14:27:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 14:27:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 182 transitions. [2020-10-27 14:27:08,920 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 182 transitions. Word has length 53 [2020-10-27 14:27:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:08,920 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 182 transitions. [2020-10-27 14:27:08,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:27:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 182 transitions. [2020-10-27 14:27:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 14:27:08,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:08,921 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:08,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:27:08,921 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:08,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1661857625, now seen corresponding path program 12 times [2020-10-27 14:27:08,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:08,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903995968] [2020-10-27 14:27:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:08,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 14:27:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-27 14:27:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:27:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:27:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:10,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:10,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:10,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:10,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:10,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:10,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:10,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:10,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903995968] [2020-10-27 14:27:10,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:10,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:27:10,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208213846] [2020-10-27 14:27:10,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:27:10,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:10,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:27:10,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:27:10,101 INFO L87 Difference]: Start difference. First operand 142 states and 182 transitions. Second operand 17 states. [2020-10-27 14:27:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:10,341 INFO L93 Difference]: Finished difference Result 177 states and 226 transitions. [2020-10-27 14:27:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:27:10,341 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-27 14:27:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:10,343 INFO L225 Difference]: With dead ends: 177 [2020-10-27 14:27:10,343 INFO L226 Difference]: Without dead ends: 157 [2020-10-27 14:27:10,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:27:10,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-27 14:27:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2020-10-27 14:27:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-27 14:27:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2020-10-27 14:27:10,352 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 56 [2020-10-27 14:27:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:10,352 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2020-10-27 14:27:10,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:27:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2020-10-27 14:27:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:27:10,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:10,353 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:10,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:27:10,353 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1085996981, now seen corresponding path program 13 times [2020-10-27 14:27:10,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:10,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128704212] [2020-10-27 14:27:10,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:11,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:11,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:27:11,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-27 14:27:11,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:27:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:27:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:11,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:11,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:11,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128704212] [2020-10-27 14:27:11,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:11,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:27:11,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938012006] [2020-10-27 14:27:11,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:27:11,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:11,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:27:11,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:27:11,423 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand 18 states. [2020-10-27 14:27:11,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:11,676 INFO L93 Difference]: Finished difference Result 186 states and 238 transitions. [2020-10-27 14:27:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:27:11,676 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-27 14:27:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:11,678 INFO L225 Difference]: With dead ends: 186 [2020-10-27 14:27:11,678 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 14:27:11,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:27:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 14:27:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2020-10-27 14:27:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 14:27:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 206 transitions. [2020-10-27 14:27:11,687 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 206 transitions. Word has length 59 [2020-10-27 14:27:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:11,688 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 206 transitions. [2020-10-27 14:27:11,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:27:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 206 transitions. [2020-10-27 14:27:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 14:27:11,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:11,689 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:11,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:27:11,689 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:11,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:11,690 INFO L82 PathProgramCache]: Analyzing trace with hash 279068199, now seen corresponding path program 14 times [2020-10-27 14:27:11,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:11,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459633122] [2020-10-27 14:27:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:12,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 14:27:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-10-27 14:27:12,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:27:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:27:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:12,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:12,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:12,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:12,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:12,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:12,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:12,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459633122] [2020-10-27 14:27:12,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:12,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:27:12,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195151817] [2020-10-27 14:27:12,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:27:12,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:12,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:27:12,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:27:12,907 INFO L87 Difference]: Start difference. First operand 160 states and 206 transitions. Second operand 19 states. [2020-10-27 14:27:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:13,158 INFO L93 Difference]: Finished difference Result 195 states and 250 transitions. [2020-10-27 14:27:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:27:13,158 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-27 14:27:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:13,160 INFO L225 Difference]: With dead ends: 195 [2020-10-27 14:27:13,160 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:27:13,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:27:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:27:13,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2020-10-27 14:27:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 14:27:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 218 transitions. [2020-10-27 14:27:13,173 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 218 transitions. Word has length 62 [2020-10-27 14:27:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:13,173 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 218 transitions. [2020-10-27 14:27:13,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:27:13,173 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 218 transitions. [2020-10-27 14:27:13,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:27:13,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:13,178 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:13,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:27:13,179 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:13,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:13,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2109480245, now seen corresponding path program 15 times [2020-10-27 14:27:13,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:13,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730441696] [2020-10-27 14:27:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:14,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:14,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:27:14,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1111 [2020-10-27 14:27:14,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:27:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:14,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:27:14,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:14,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:14,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:14,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730441696] [2020-10-27 14:27:14,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:14,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:27:14,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576822062] [2020-10-27 14:27:14,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:27:14,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:27:14,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:27:14,640 INFO L87 Difference]: Start difference. First operand 169 states and 218 transitions. Second operand 20 states. [2020-10-27 14:27:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:14,878 INFO L93 Difference]: Finished difference Result 204 states and 262 transitions. [2020-10-27 14:27:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:27:14,879 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 65 [2020-10-27 14:27:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:14,881 INFO L225 Difference]: With dead ends: 204 [2020-10-27 14:27:14,881 INFO L226 Difference]: Without dead ends: 184 [2020-10-27 14:27:14,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:27:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-27 14:27:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2020-10-27 14:27:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 14:27:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 230 transitions. [2020-10-27 14:27:14,894 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 230 transitions. Word has length 65 [2020-10-27 14:27:14,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:14,894 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 230 transitions. [2020-10-27 14:27:14,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:27:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 230 transitions. [2020-10-27 14:27:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:27:14,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:14,898 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:14,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:27:14,899 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:14,899 INFO L82 PathProgramCache]: Analyzing trace with hash -338015321, now seen corresponding path program 16 times [2020-10-27 14:27:14,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:14,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306814845] [2020-10-27 14:27:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:15,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1070 [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 14:27:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:16,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:16,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:16,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:16,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:16,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:16,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306814845] [2020-10-27 14:27:16,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:16,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:27:16,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438752131] [2020-10-27 14:27:16,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:27:16,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:16,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:27:16,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:27:16,324 INFO L87 Difference]: Start difference. First operand 178 states and 230 transitions. Second operand 21 states. [2020-10-27 14:27:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:16,604 INFO L93 Difference]: Finished difference Result 213 states and 274 transitions. [2020-10-27 14:27:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:27:16,605 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-10-27 14:27:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:16,606 INFO L225 Difference]: With dead ends: 213 [2020-10-27 14:27:16,606 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 14:27:16,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:27:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 14:27:16,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2020-10-27 14:27:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-27 14:27:16,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2020-10-27 14:27:16,629 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 68 [2020-10-27 14:27:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:16,629 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2020-10-27 14:27:16,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:27:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2020-10-27 14:27:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:27:16,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:16,632 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:16,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:27:16,633 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1110369611, now seen corresponding path program 17 times [2020-10-27 14:27:16,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:16,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867557670] [2020-10-27 14:27:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:17,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:17,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 14:27:17,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-27 14:27:17,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:17,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:27:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:27:17,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:18,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:18,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:18,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:27:18,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:18,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:18,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:18,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867557670] [2020-10-27 14:27:18,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:18,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:27:18,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407487287] [2020-10-27 14:27:18,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:27:18,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:18,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:27:18,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:27:18,294 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand 22 states. [2020-10-27 14:27:18,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:18,543 INFO L93 Difference]: Finished difference Result 222 states and 286 transitions. [2020-10-27 14:27:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:27:18,546 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-10-27 14:27:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:18,548 INFO L225 Difference]: With dead ends: 222 [2020-10-27 14:27:18,548 INFO L226 Difference]: Without dead ends: 202 [2020-10-27 14:27:18,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:27:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-27 14:27:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2020-10-27 14:27:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-27 14:27:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 254 transitions. [2020-10-27 14:27:18,568 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 254 transitions. Word has length 71 [2020-10-27 14:27:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:18,569 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 254 transitions. [2020-10-27 14:27:18,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:27:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 254 transitions. [2020-10-27 14:27:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-27 14:27:18,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:18,570 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:18,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:27:18,570 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:18,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1590544089, now seen corresponding path program 18 times [2020-10-27 14:27:18,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:18,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495401560] [2020-10-27 14:27:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:19,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:19,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:27:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-27 14:27:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:27:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 14:27:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:20,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:20,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:20,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:20,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:27:20,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:20,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:20,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:20,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:20,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:20,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495401560] [2020-10-27 14:27:20,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:20,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:27:20,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085981556] [2020-10-27 14:27:20,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:27:20,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:20,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:27:20,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:27:20,127 INFO L87 Difference]: Start difference. First operand 196 states and 254 transitions. Second operand 23 states. [2020-10-27 14:27:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:20,333 INFO L93 Difference]: Finished difference Result 231 states and 298 transitions. [2020-10-27 14:27:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:27:20,333 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 74 [2020-10-27 14:27:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:20,335 INFO L225 Difference]: With dead ends: 231 [2020-10-27 14:27:20,335 INFO L226 Difference]: Without dead ends: 211 [2020-10-27 14:27:20,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:27:20,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-27 14:27:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2020-10-27 14:27:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-27 14:27:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 266 transitions. [2020-10-27 14:27:20,346 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 266 transitions. Word has length 74 [2020-10-27 14:27:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:20,346 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 266 transitions. [2020-10-27 14:27:20,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:27:20,346 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 266 transitions. [2020-10-27 14:27:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 14:27:20,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:20,347 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:20,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:27:20,348 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:20,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1701709771, now seen corresponding path program 19 times [2020-10-27 14:27:20,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:20,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081162181] [2020-10-27 14:27:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:20,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:21,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:21,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 14:27:21,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:21,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-27 14:27:21,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:27:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:21,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:27:21,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:22,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:22,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:22,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:22,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:22,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:22,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:22,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:22,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:22,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081162181] [2020-10-27 14:27:22,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:22,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:27:22,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123600019] [2020-10-27 14:27:22,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:27:22,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:22,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:27:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:27:22,180 INFO L87 Difference]: Start difference. First operand 205 states and 266 transitions. Second operand 24 states. [2020-10-27 14:27:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:22,483 INFO L93 Difference]: Finished difference Result 240 states and 310 transitions. [2020-10-27 14:27:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:27:22,483 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 77 [2020-10-27 14:27:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:22,485 INFO L225 Difference]: With dead ends: 240 [2020-10-27 14:27:22,485 INFO L226 Difference]: Without dead ends: 220 [2020-10-27 14:27:22,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:27:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-27 14:27:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2020-10-27 14:27:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-27 14:27:22,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-10-27 14:27:22,498 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 77 [2020-10-27 14:27:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:22,498 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-10-27 14:27:22,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:27:22,499 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-10-27 14:27:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:27:22,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:22,500 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:22,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:27:22,502 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:22,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1363281575, now seen corresponding path program 20 times [2020-10-27 14:27:22,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:22,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172972868] [2020-10-27 14:27:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:23,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:23,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:27:23,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1472 [2020-10-27 14:27:23,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:27:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 14:27:23,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:24,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:24,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:24,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:24,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:24,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:24,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:24,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172972868] [2020-10-27 14:27:24,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:24,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:27:24,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593960348] [2020-10-27 14:27:24,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:27:24,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:24,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:27:24,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:27:24,446 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 25 states. [2020-10-27 14:27:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:24,684 INFO L93 Difference]: Finished difference Result 249 states and 322 transitions. [2020-10-27 14:27:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:27:24,685 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80 [2020-10-27 14:27:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:24,687 INFO L225 Difference]: With dead ends: 249 [2020-10-27 14:27:24,687 INFO L226 Difference]: Without dead ends: 229 [2020-10-27 14:27:24,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:27:24,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-27 14:27:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2020-10-27 14:27:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-27 14:27:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 290 transitions. [2020-10-27 14:27:24,698 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 290 transitions. Word has length 80 [2020-10-27 14:27:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:24,698 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 290 transitions. [2020-10-27 14:27:24,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:27:24,699 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 290 transitions. [2020-10-27 14:27:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:27:24,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:24,700 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:24,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:27:24,700 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash -462861749, now seen corresponding path program 21 times [2020-10-27 14:27:24,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:24,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894438758] [2020-10-27 14:27:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:24,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:26,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:26,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:27:26,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:26,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-27 14:27:26,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:27:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:27:26,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:26,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:26,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:26,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:26,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:26,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:26,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:26,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:26,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894438758] [2020-10-27 14:27:26,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:26,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:27:26,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664787373] [2020-10-27 14:27:26,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:27:26,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:27:26,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:27:26,783 INFO L87 Difference]: Start difference. First operand 223 states and 290 transitions. Second operand 26 states. [2020-10-27 14:27:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:27,023 INFO L93 Difference]: Finished difference Result 258 states and 334 transitions. [2020-10-27 14:27:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:27:27,024 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 83 [2020-10-27 14:27:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:27,026 INFO L225 Difference]: With dead ends: 258 [2020-10-27 14:27:27,026 INFO L226 Difference]: Without dead ends: 238 [2020-10-27 14:27:27,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:27:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-27 14:27:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 232. [2020-10-27 14:27:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-27 14:27:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 302 transitions. [2020-10-27 14:27:27,038 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 302 transitions. Word has length 83 [2020-10-27 14:27:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:27,038 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 302 transitions. [2020-10-27 14:27:27,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:27:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 302 transitions. [2020-10-27 14:27:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 14:27:27,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:27,040 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:27,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:27:27,040 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:27,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1252111399, now seen corresponding path program 22 times [2020-10-27 14:27:27,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:27,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547893144] [2020-10-27 14:27:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:27,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:28,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:27:28,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-27 14:27:28,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:27:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:28,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 14:27:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:28,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:28,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:28,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:28,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:28,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:28,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547893144] [2020-10-27 14:27:28,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:28,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:27:28,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939477570] [2020-10-27 14:27:28,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:27:28,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:28,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:27:28,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:27:28,898 INFO L87 Difference]: Start difference. First operand 232 states and 302 transitions. Second operand 27 states. [2020-10-27 14:27:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:29,261 INFO L93 Difference]: Finished difference Result 267 states and 346 transitions. [2020-10-27 14:27:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:27:29,262 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 86 [2020-10-27 14:27:29,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:29,265 INFO L225 Difference]: With dead ends: 267 [2020-10-27 14:27:29,265 INFO L226 Difference]: Without dead ends: 247 [2020-10-27 14:27:29,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:27:29,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-27 14:27:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 241. [2020-10-27 14:27:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-27 14:27:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 314 transitions. [2020-10-27 14:27:29,277 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 314 transitions. Word has length 86 [2020-10-27 14:27:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:29,277 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 314 transitions. [2020-10-27 14:27:29,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:27:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 314 transitions. [2020-10-27 14:27:29,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:27:29,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:29,279 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:29,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:27:29,279 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:29,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:29,280 INFO L82 PathProgramCache]: Analyzing trace with hash -913789749, now seen corresponding path program 23 times [2020-10-27 14:27:29,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:29,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233995648] [2020-10-27 14:27:29,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:29,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:30,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:30,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:27:30,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-27 14:27:30,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:27:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:27:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:31,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:31,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:31,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:31,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:31,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:27:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:31,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233995648] [2020-10-27 14:27:31,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:31,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:27:31,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984777578] [2020-10-27 14:27:31,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:27:31,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:31,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:27:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:27:31,200 INFO L87 Difference]: Start difference. First operand 241 states and 314 transitions. Second operand 28 states. [2020-10-27 14:27:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:31,488 INFO L93 Difference]: Finished difference Result 276 states and 358 transitions. [2020-10-27 14:27:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:27:31,489 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 89 [2020-10-27 14:27:31,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:31,491 INFO L225 Difference]: With dead ends: 276 [2020-10-27 14:27:31,492 INFO L226 Difference]: Without dead ends: 256 [2020-10-27 14:27:31,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:27:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-27 14:27:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2020-10-27 14:27:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-27 14:27:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 326 transitions. [2020-10-27 14:27:31,503 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 326 transitions. Word has length 89 [2020-10-27 14:27:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:31,504 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 326 transitions. [2020-10-27 14:27:31,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:27:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 326 transitions. [2020-10-27 14:27:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 14:27:31,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:31,505 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:31,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:27:31,506 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:31,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:31,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1981202009, now seen corresponding path program 24 times [2020-10-27 14:27:31,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:31,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203812623] [2020-10-27 14:27:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:31,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:32,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:27:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:33,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:33,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:33,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:33,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:27:33,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:33,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:33,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203812623] [2020-10-27 14:27:33,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:33,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:27:33,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390523240] [2020-10-27 14:27:33,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:27:33,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:33,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:27:33,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:27:33,480 INFO L87 Difference]: Start difference. First operand 250 states and 326 transitions. Second operand 29 states. [2020-10-27 14:27:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:33,855 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2020-10-27 14:27:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:27:33,856 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 92 [2020-10-27 14:27:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:33,858 INFO L225 Difference]: With dead ends: 285 [2020-10-27 14:27:33,858 INFO L226 Difference]: Without dead ends: 265 [2020-10-27 14:27:33,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:27:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-27 14:27:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2020-10-27 14:27:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-27 14:27:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2020-10-27 14:27:33,875 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 92 [2020-10-27 14:27:33,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:33,875 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2020-10-27 14:27:33,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:27:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2020-10-27 14:27:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:27:33,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:33,877 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:33,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:27:33,877 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:33,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:33,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1321980085, now seen corresponding path program 25 times [2020-10-27 14:27:33,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:33,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414185770] [2020-10-27 14:27:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:33,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:35,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:35,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:27:35,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:35,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-27 14:27:35,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:35,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:27:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 14:27:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:36,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:36,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414185770] [2020-10-27 14:27:36,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:36,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:27:36,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627192995] [2020-10-27 14:27:36,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:27:36,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:36,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:27:36,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:27:36,175 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand 30 states. [2020-10-27 14:27:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:36,585 INFO L93 Difference]: Finished difference Result 294 states and 382 transitions. [2020-10-27 14:27:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:27:36,592 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 95 [2020-10-27 14:27:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:36,598 INFO L225 Difference]: With dead ends: 294 [2020-10-27 14:27:36,598 INFO L226 Difference]: Without dead ends: 274 [2020-10-27 14:27:36,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:27:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-27 14:27:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 268. [2020-10-27 14:27:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-27 14:27:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 350 transitions. [2020-10-27 14:27:36,617 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 350 transitions. Word has length 95 [2020-10-27 14:27:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:36,618 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 350 transitions. [2020-10-27 14:27:36,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:27:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 350 transitions. [2020-10-27 14:27:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 14:27:36,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:36,619 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:36,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:27:36,619 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:36,620 INFO L82 PathProgramCache]: Analyzing trace with hash 967880487, now seen corresponding path program 26 times [2020-10-27 14:27:36,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:36,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218280498] [2020-10-27 14:27:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:38,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:27:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-10-27 14:27:38,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:27:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 14:27:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:27:39,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:39,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:39,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218280498] [2020-10-27 14:27:39,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:39,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:27:39,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842346544] [2020-10-27 14:27:39,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:27:39,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:39,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:27:39,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:27:39,370 INFO L87 Difference]: Start difference. First operand 268 states and 350 transitions. Second operand 31 states. [2020-10-27 14:27:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:39,624 INFO L93 Difference]: Finished difference Result 303 states and 394 transitions. [2020-10-27 14:27:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:27:39,625 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 98 [2020-10-27 14:27:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:39,628 INFO L225 Difference]: With dead ends: 303 [2020-10-27 14:27:39,628 INFO L226 Difference]: Without dead ends: 283 [2020-10-27 14:27:39,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:27:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-27 14:27:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2020-10-27 14:27:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-27 14:27:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 362 transitions. [2020-10-27 14:27:39,642 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 362 transitions. Word has length 98 [2020-10-27 14:27:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:39,642 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 362 transitions. [2020-10-27 14:27:39,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:27:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 362 transitions. [2020-10-27 14:27:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:27:39,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:39,644 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:39,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:27:39,644 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:39,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1238618571, now seen corresponding path program 27 times [2020-10-27 14:27:39,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:39,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517081531] [2020-10-27 14:27:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:41,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1860 [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 14:27:41,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:42,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:42,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:42,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517081531] [2020-10-27 14:27:42,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:42,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:27:42,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628565519] [2020-10-27 14:27:42,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:27:42,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:42,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:27:42,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:27:42,203 INFO L87 Difference]: Start difference. First operand 277 states and 362 transitions. Second operand 32 states. [2020-10-27 14:27:42,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:42,641 INFO L93 Difference]: Finished difference Result 312 states and 406 transitions. [2020-10-27 14:27:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:27:42,641 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 101 [2020-10-27 14:27:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:42,644 INFO L225 Difference]: With dead ends: 312 [2020-10-27 14:27:42,644 INFO L226 Difference]: Without dead ends: 292 [2020-10-27 14:27:42,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:27:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-27 14:27:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 286. [2020-10-27 14:27:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-27 14:27:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 374 transitions. [2020-10-27 14:27:42,658 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 374 transitions. Word has length 101 [2020-10-27 14:27:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:42,658 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 374 transitions. [2020-10-27 14:27:42,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:27:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 374 transitions. [2020-10-27 14:27:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 14:27:42,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:42,660 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:42,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:27:42,661 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash 848297127, now seen corresponding path program 28 times [2020-10-27 14:27:42,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:42,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551186210] [2020-10-27 14:27:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:42,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2019 [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 14:27:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:45,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:45,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:45,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:45,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:45,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:45,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551186210] [2020-10-27 14:27:45,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:45,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:27:45,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517796324] [2020-10-27 14:27:45,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:27:45,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:27:45,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:27:45,445 INFO L87 Difference]: Start difference. First operand 286 states and 374 transitions. Second operand 33 states. [2020-10-27 14:27:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:45,899 INFO L93 Difference]: Finished difference Result 321 states and 418 transitions. [2020-10-27 14:27:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:27:45,900 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 104 [2020-10-27 14:27:45,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:45,902 INFO L225 Difference]: With dead ends: 321 [2020-10-27 14:27:45,903 INFO L226 Difference]: Without dead ends: 301 [2020-10-27 14:27:45,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:27:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-27 14:27:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 295. [2020-10-27 14:27:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-27 14:27:45,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 386 transitions. [2020-10-27 14:27:45,917 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 386 transitions. Word has length 104 [2020-10-27 14:27:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:45,918 INFO L481 AbstractCegarLoop]: Abstraction has 295 states and 386 transitions. [2020-10-27 14:27:45,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:27:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 386 transitions. [2020-10-27 14:27:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 14:27:45,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:45,919 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:45,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:27:45,919 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:45,920 INFO L82 PathProgramCache]: Analyzing trace with hash -741370805, now seen corresponding path program 29 times [2020-10-27 14:27:45,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:45,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323875484] [2020-10-27 14:27:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:45,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:48,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:48,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 14:27:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2211 [2020-10-27 14:27:48,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:27:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 14:27:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:48,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:48,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:48,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:27:48,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:48,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323875484] [2020-10-27 14:27:48,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:48,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-27 14:27:48,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370015552] [2020-10-27 14:27:48,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-27 14:27:48,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:48,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-27 14:27:48,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:27:48,957 INFO L87 Difference]: Start difference. First operand 295 states and 386 transitions. Second operand 34 states. [2020-10-27 14:27:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:49,421 INFO L93 Difference]: Finished difference Result 330 states and 430 transitions. [2020-10-27 14:27:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:27:49,422 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 107 [2020-10-27 14:27:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:49,426 INFO L225 Difference]: With dead ends: 330 [2020-10-27 14:27:49,426 INFO L226 Difference]: Without dead ends: 310 [2020-10-27 14:27:49,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:27:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-27 14:27:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2020-10-27 14:27:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-27 14:27:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 398 transitions. [2020-10-27 14:27:49,439 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 398 transitions. Word has length 107 [2020-10-27 14:27:49,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:49,440 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 398 transitions. [2020-10-27 14:27:49,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-27 14:27:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 398 transitions. [2020-10-27 14:27:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 14:27:49,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:49,441 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:49,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:27:49,441 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2065639975, now seen corresponding path program 30 times [2020-10-27 14:27:49,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:49,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380716033] [2020-10-27 14:27:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:49,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2368 [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 14:27:51,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:52,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:52,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380716033] [2020-10-27 14:27:52,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:52,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:27:52,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877911219] [2020-10-27 14:27:52,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:27:52,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:52,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:27:52,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:27:52,717 INFO L87 Difference]: Start difference. First operand 304 states and 398 transitions. Second operand 35 states. [2020-10-27 14:27:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:53,179 INFO L93 Difference]: Finished difference Result 339 states and 442 transitions. [2020-10-27 14:27:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:27:53,180 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 110 [2020-10-27 14:27:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:53,182 INFO L225 Difference]: With dead ends: 339 [2020-10-27 14:27:53,182 INFO L226 Difference]: Without dead ends: 319 [2020-10-27 14:27:53,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:27:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-27 14:27:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 313. [2020-10-27 14:27:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-27 14:27:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 410 transitions. [2020-10-27 14:27:53,196 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 410 transitions. Word has length 110 [2020-10-27 14:27:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:53,196 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 410 transitions. [2020-10-27 14:27:53,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:27:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 410 transitions. [2020-10-27 14:27:53,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 14:27:53,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:53,198 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:53,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:27:53,198 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:53,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1584433461, now seen corresponding path program 31 times [2020-10-27 14:27:53,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:53,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359954065] [2020-10-27 14:27:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:55,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 14:27:55,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:27:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2588 [2020-10-27 14:27:55,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 14:27:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:27:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 14:27:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:27:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:56,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:27:56,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:27:56,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:27:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:27:56,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:27:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:27:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:27:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:27:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:27:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:27:56,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359954065] [2020-10-27 14:27:56,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:27:56,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-27 14:27:56,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891969336] [2020-10-27 14:27:56,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-27 14:27:56,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:27:56,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-27 14:27:56,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:27:56,716 INFO L87 Difference]: Start difference. First operand 313 states and 410 transitions. Second operand 36 states. [2020-10-27 14:27:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:27:57,208 INFO L93 Difference]: Finished difference Result 348 states and 454 transitions. [2020-10-27 14:27:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:27:57,208 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 113 [2020-10-27 14:27:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:27:57,211 INFO L225 Difference]: With dead ends: 348 [2020-10-27 14:27:57,211 INFO L226 Difference]: Without dead ends: 328 [2020-10-27 14:27:57,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:27:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-27 14:27:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 322. [2020-10-27 14:27:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-27 14:27:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 422 transitions. [2020-10-27 14:27:57,225 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 422 transitions. Word has length 113 [2020-10-27 14:27:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:27:57,226 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 422 transitions. [2020-10-27 14:27:57,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-27 14:27:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 422 transitions. [2020-10-27 14:27:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:27:57,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:27:57,227 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:27:57,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:27:57,227 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:27:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:27:57,228 INFO L82 PathProgramCache]: Analyzing trace with hash -940165209, now seen corresponding path program 32 times [2020-10-27 14:27:57,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:27:57,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976965372] [2020-10-27 14:27:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:27:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:27:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:27:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:00,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:00,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:28:00,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2947 [2020-10-27 14:28:00,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 14:28:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:00,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 14:28:00,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:01,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:01,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:01,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:01,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:28:01,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:01,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976965372] [2020-10-27 14:28:01,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:01,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:28:01,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650356490] [2020-10-27 14:28:01,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:28:01,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:01,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:28:01,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:28:01,169 INFO L87 Difference]: Start difference. First operand 322 states and 422 transitions. Second operand 37 states. [2020-10-27 14:28:01,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:01,655 INFO L93 Difference]: Finished difference Result 357 states and 466 transitions. [2020-10-27 14:28:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:28:01,656 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 116 [2020-10-27 14:28:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:01,659 INFO L225 Difference]: With dead ends: 357 [2020-10-27 14:28:01,659 INFO L226 Difference]: Without dead ends: 337 [2020-10-27 14:28:01,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:28:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-27 14:28:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 331. [2020-10-27 14:28:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-27 14:28:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 434 transitions. [2020-10-27 14:28:01,674 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 434 transitions. Word has length 116 [2020-10-27 14:28:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:01,674 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 434 transitions. [2020-10-27 14:28:01,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:28:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 434 transitions. [2020-10-27 14:28:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 14:28:01,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:01,676 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:01,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:28:01,676 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1753515701, now seen corresponding path program 33 times [2020-10-27 14:28:01,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:01,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183070560] [2020-10-27 14:28:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:01,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:04,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:04,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:28:04,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3244 [2020-10-27 14:28:04,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 14:28:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 14:28:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:05,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:05,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183070560] [2020-10-27 14:28:05,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:05,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 14:28:05,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486149482] [2020-10-27 14:28:05,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 14:28:05,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:05,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 14:28:05,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:28:05,978 INFO L87 Difference]: Start difference. First operand 331 states and 434 transitions. Second operand 38 states. [2020-10-27 14:28:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:06,486 INFO L93 Difference]: Finished difference Result 366 states and 478 transitions. [2020-10-27 14:28:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:28:06,486 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 119 [2020-10-27 14:28:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:06,490 INFO L225 Difference]: With dead ends: 366 [2020-10-27 14:28:06,490 INFO L226 Difference]: Without dead ends: 346 [2020-10-27 14:28:06,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:28:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-27 14:28:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2020-10-27 14:28:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-27 14:28:06,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 446 transitions. [2020-10-27 14:28:06,504 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 446 transitions. Word has length 119 [2020-10-27 14:28:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:06,504 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 446 transitions. [2020-10-27 14:28:06,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 14:28:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 446 transitions. [2020-10-27 14:28:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 14:28:06,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:06,506 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:06,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:28:06,506 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:06,506 INFO L82 PathProgramCache]: Analyzing trace with hash -72538841, now seen corresponding path program 34 times [2020-10-27 14:28:06,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:06,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831120186] [2020-10-27 14:28:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:08,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:08,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 14:28:08,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2158 [2020-10-27 14:28:08,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 14:28:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 14:28:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:09,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:09,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:09,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831120186] [2020-10-27 14:28:09,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:09,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:28:09,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542265695] [2020-10-27 14:28:09,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:28:09,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:09,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:28:09,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:28:09,739 INFO L87 Difference]: Start difference. First operand 340 states and 446 transitions. Second operand 39 states. [2020-10-27 14:28:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:10,096 INFO L93 Difference]: Finished difference Result 375 states and 490 transitions. [2020-10-27 14:28:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:28:10,096 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 122 [2020-10-27 14:28:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:10,099 INFO L225 Difference]: With dead ends: 375 [2020-10-27 14:28:10,099 INFO L226 Difference]: Without dead ends: 355 [2020-10-27 14:28:10,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:28:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-27 14:28:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 349. [2020-10-27 14:28:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-27 14:28:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 458 transitions. [2020-10-27 14:28:10,115 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 458 transitions. Word has length 122 [2020-10-27 14:28:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:10,115 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 458 transitions. [2020-10-27 14:28:10,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:28:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 458 transitions. [2020-10-27 14:28:10,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:28:10,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:10,117 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:10,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:28:10,118 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:10,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:10,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1409573941, now seen corresponding path program 35 times [2020-10-27 14:28:10,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:10,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513054380] [2020-10-27 14:28:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:13,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3132 [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 14:28:13,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:14,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:14,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:14,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:14,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:14,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:14,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:14,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:14,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:14,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513054380] [2020-10-27 14:28:14,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:14,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-27 14:28:14,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892948230] [2020-10-27 14:28:14,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-27 14:28:14,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-27 14:28:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:28:14,400 INFO L87 Difference]: Start difference. First operand 349 states and 458 transitions. Second operand 40 states. [2020-10-27 14:28:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:14,718 INFO L93 Difference]: Finished difference Result 384 states and 502 transitions. [2020-10-27 14:28:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:28:14,723 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 125 [2020-10-27 14:28:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:14,726 INFO L225 Difference]: With dead ends: 384 [2020-10-27 14:28:14,726 INFO L226 Difference]: Without dead ends: 364 [2020-10-27 14:28:14,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:28:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-27 14:28:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 358. [2020-10-27 14:28:14,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-10-27 14:28:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 470 transitions. [2020-10-27 14:28:14,740 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 470 transitions. Word has length 125 [2020-10-27 14:28:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:14,740 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 470 transitions. [2020-10-27 14:28:14,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-27 14:28:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 470 transitions. [2020-10-27 14:28:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 14:28:14,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:14,742 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:14,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:28:14,742 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:14,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:14,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1495534937, now seen corresponding path program 36 times [2020-10-27 14:28:14,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:14,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044031583] [2020-10-27 14:28:14,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2738 [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 14:28:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:18,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:18,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:18,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:18,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:18,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044031583] [2020-10-27 14:28:18,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:18,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 14:28:18,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302999055] [2020-10-27 14:28:18,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 14:28:18,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 14:28:18,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:28:18,684 INFO L87 Difference]: Start difference. First operand 358 states and 470 transitions. Second operand 41 states. [2020-10-27 14:28:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:19,123 INFO L93 Difference]: Finished difference Result 393 states and 514 transitions. [2020-10-27 14:28:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:28:19,124 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 128 [2020-10-27 14:28:19,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:19,128 INFO L225 Difference]: With dead ends: 393 [2020-10-27 14:28:19,128 INFO L226 Difference]: Without dead ends: 373 [2020-10-27 14:28:19,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:28:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-27 14:28:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 367. [2020-10-27 14:28:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-27 14:28:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 482 transitions. [2020-10-27 14:28:19,142 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 482 transitions. Word has length 128 [2020-10-27 14:28:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:19,142 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 482 transitions. [2020-10-27 14:28:19,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 14:28:19,142 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 482 transitions. [2020-10-27 14:28:19,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 14:28:19,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:19,144 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:19,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 14:28:19,144 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:19,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1735908939, now seen corresponding path program 37 times [2020-10-27 14:28:19,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:19,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872472762] [2020-10-27 14:28:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:21,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:21,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 14:28:21,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:21,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2818 [2020-10-27 14:28:21,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 14:28:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:21,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 14:28:21,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:23,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:23,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:23,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:23,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:23,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2147 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:23,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872472762] [2020-10-27 14:28:23,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:23,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-27 14:28:23,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589510187] [2020-10-27 14:28:23,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-27 14:28:23,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:23,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-27 14:28:23,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:28:23,239 INFO L87 Difference]: Start difference. First operand 367 states and 482 transitions. Second operand 42 states. [2020-10-27 14:28:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:23,809 INFO L93 Difference]: Finished difference Result 402 states and 526 transitions. [2020-10-27 14:28:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:28:23,810 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 131 [2020-10-27 14:28:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:23,813 INFO L225 Difference]: With dead ends: 402 [2020-10-27 14:28:23,813 INFO L226 Difference]: Without dead ends: 382 [2020-10-27 14:28:23,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:28:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-27 14:28:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 376. [2020-10-27 14:28:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-27 14:28:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 494 transitions. [2020-10-27 14:28:23,830 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 494 transitions. Word has length 131 [2020-10-27 14:28:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:23,830 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 494 transitions. [2020-10-27 14:28:23,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-27 14:28:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 494 transitions. [2020-10-27 14:28:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 14:28:23,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:23,832 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:23,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 14:28:23,832 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2011520985, now seen corresponding path program 38 times [2020-10-27 14:28:23,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:23,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975260422] [2020-10-27 14:28:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:26,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2980 [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 14:28:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:28,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:28,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:28,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:28,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2262 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:28,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975260422] [2020-10-27 14:28:28,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:28,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 14:28:28,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867326367] [2020-10-27 14:28:28,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 14:28:28,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:28,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 14:28:28,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:28:28,152 INFO L87 Difference]: Start difference. First operand 376 states and 494 transitions. Second operand 43 states. [2020-10-27 14:28:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:28,504 INFO L93 Difference]: Finished difference Result 411 states and 538 transitions. [2020-10-27 14:28:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 14:28:28,505 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 134 [2020-10-27 14:28:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:28,507 INFO L225 Difference]: With dead ends: 411 [2020-10-27 14:28:28,507 INFO L226 Difference]: Without dead ends: 391 [2020-10-27 14:28:28,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:28:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-27 14:28:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 385. [2020-10-27 14:28:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-27 14:28:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 506 transitions. [2020-10-27 14:28:28,525 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 506 transitions. Word has length 134 [2020-10-27 14:28:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:28,528 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 506 transitions. [2020-10-27 14:28:28,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 14:28:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 506 transitions. [2020-10-27 14:28:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:28:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:28,531 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:28,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-27 14:28:28,531 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1683505355, now seen corresponding path program 39 times [2020-10-27 14:28:28,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:28,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58369395] [2020-10-27 14:28:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:28,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 14:28:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3532 [2020-10-27 14:28:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 14:28:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 14:28:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:33,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:33,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:33,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:33,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:33,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58369395] [2020-10-27 14:28:33,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:33,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-27 14:28:33,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938010485] [2020-10-27 14:28:33,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-27 14:28:33,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-27 14:28:33,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:28:33,420 INFO L87 Difference]: Start difference. First operand 385 states and 506 transitions. Second operand 44 states. [2020-10-27 14:28:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:33,954 INFO L93 Difference]: Finished difference Result 420 states and 550 transitions. [2020-10-27 14:28:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:28:33,955 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 137 [2020-10-27 14:28:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:33,958 INFO L225 Difference]: With dead ends: 420 [2020-10-27 14:28:33,958 INFO L226 Difference]: Without dead ends: 400 [2020-10-27 14:28:33,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:28:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-27 14:28:33,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 394. [2020-10-27 14:28:33,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-27 14:28:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 518 transitions. [2020-10-27 14:28:33,973 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 518 transitions. Word has length 137 [2020-10-27 14:28:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:33,973 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 518 transitions. [2020-10-27 14:28:33,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-27 14:28:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 518 transitions. [2020-10-27 14:28:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:28:33,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:33,975 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:33,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-27 14:28:33,975 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 201403815, now seen corresponding path program 40 times [2020-10-27 14:28:33,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:33,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572450127] [2020-10-27 14:28:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:34,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:37,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3402 [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 14:28:37,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:38,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:38,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:38,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572450127] [2020-10-27 14:28:38,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:38,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 14:28:38,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872678108] [2020-10-27 14:28:38,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 14:28:38,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:38,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 14:28:38,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:28:38,817 INFO L87 Difference]: Start difference. First operand 394 states and 518 transitions. Second operand 45 states. [2020-10-27 14:28:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:39,277 INFO L93 Difference]: Finished difference Result 429 states and 562 transitions. [2020-10-27 14:28:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 14:28:39,278 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 140 [2020-10-27 14:28:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:39,282 INFO L225 Difference]: With dead ends: 429 [2020-10-27 14:28:39,282 INFO L226 Difference]: Without dead ends: 409 [2020-10-27 14:28:39,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:28:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-27 14:28:39,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 403. [2020-10-27 14:28:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-27 14:28:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 530 transitions. [2020-10-27 14:28:39,297 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 530 transitions. Word has length 140 [2020-10-27 14:28:39,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:39,298 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 530 transitions. [2020-10-27 14:28:39,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 14:28:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 530 transitions. [2020-10-27 14:28:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 14:28:39,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:39,299 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:39,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-27 14:28:39,300 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:39,300 INFO L82 PathProgramCache]: Analyzing trace with hash -821771445, now seen corresponding path program 41 times [2020-10-27 14:28:39,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:39,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825660276] [2020-10-27 14:28:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:43,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3914 [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 14:28:43,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:44,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:44,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:44,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:28:44,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:44,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825660276] [2020-10-27 14:28:44,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:44,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-27 14:28:44,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997570688] [2020-10-27 14:28:44,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-27 14:28:44,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-27 14:28:44,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:28:44,726 INFO L87 Difference]: Start difference. First operand 403 states and 530 transitions. Second operand 46 states. [2020-10-27 14:28:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:45,274 INFO L93 Difference]: Finished difference Result 438 states and 574 transitions. [2020-10-27 14:28:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:28:45,275 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 143 [2020-10-27 14:28:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:45,278 INFO L225 Difference]: With dead ends: 438 [2020-10-27 14:28:45,279 INFO L226 Difference]: Without dead ends: 418 [2020-10-27 14:28:45,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:28:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-27 14:28:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 412. [2020-10-27 14:28:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-27 14:28:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 542 transitions. [2020-10-27 14:28:45,292 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 542 transitions. Word has length 143 [2020-10-27 14:28:45,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:45,292 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 542 transitions. [2020-10-27 14:28:45,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-27 14:28:45,292 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 542 transitions. [2020-10-27 14:28:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 14:28:45,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:45,294 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:45,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-27 14:28:45,294 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:45,294 INFO L82 PathProgramCache]: Analyzing trace with hash -853042393, now seen corresponding path program 42 times [2020-10-27 14:28:45,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:45,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470985443] [2020-10-27 14:28:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:45,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3971 [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 14:28:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:50,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:50,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:50,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:28:50,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:50,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470985443] [2020-10-27 14:28:50,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:50,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-27 14:28:50,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4763570] [2020-10-27 14:28:50,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-27 14:28:50,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:50,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-27 14:28:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:28:50,885 INFO L87 Difference]: Start difference. First operand 412 states and 542 transitions. Second operand 47 states. [2020-10-27 14:28:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:51,310 INFO L93 Difference]: Finished difference Result 447 states and 586 transitions. [2020-10-27 14:28:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:28:51,311 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 146 [2020-10-27 14:28:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:51,314 INFO L225 Difference]: With dead ends: 447 [2020-10-27 14:28:51,314 INFO L226 Difference]: Without dead ends: 427 [2020-10-27 14:28:51,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:28:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-27 14:28:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 421. [2020-10-27 14:28:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-27 14:28:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 554 transitions. [2020-10-27 14:28:51,329 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 554 transitions. Word has length 146 [2020-10-27 14:28:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:51,329 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 554 transitions. [2020-10-27 14:28:51,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-27 14:28:51,329 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 554 transitions. [2020-10-27 14:28:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 14:28:51,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:51,331 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:51,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-27 14:28:51,331 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:51,332 INFO L82 PathProgramCache]: Analyzing trace with hash -437951029, now seen corresponding path program 43 times [2020-10-27 14:28:51,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:51,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547094527] [2020-10-27 14:28:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:51,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:55,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:55,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:28:55,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:28:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4220 [2020-10-27 14:28:55,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-27 14:28:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:28:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 14:28:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:57,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:28:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:28:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:28:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:28:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2882 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:28:57,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547094527] [2020-10-27 14:28:57,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:28:57,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-27 14:28:57,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411293247] [2020-10-27 14:28:57,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-27 14:28:57,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:28:57,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-27 14:28:57,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:28:57,207 INFO L87 Difference]: Start difference. First operand 421 states and 554 transitions. Second operand 48 states. [2020-10-27 14:28:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:28:57,678 INFO L93 Difference]: Finished difference Result 456 states and 598 transitions. [2020-10-27 14:28:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-27 14:28:57,679 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 149 [2020-10-27 14:28:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:28:57,690 INFO L225 Difference]: With dead ends: 456 [2020-10-27 14:28:57,691 INFO L226 Difference]: Without dead ends: 436 [2020-10-27 14:28:57,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:28:57,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-27 14:28:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 430. [2020-10-27 14:28:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-27 14:28:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 566 transitions. [2020-10-27 14:28:57,704 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 566 transitions. Word has length 149 [2020-10-27 14:28:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:28:57,705 INFO L481 AbstractCegarLoop]: Abstraction has 430 states and 566 transitions. [2020-10-27 14:28:57,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-27 14:28:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 566 transitions. [2020-10-27 14:28:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 14:28:57,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:28:57,707 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:28:57,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-27 14:28:57,707 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:28:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:28:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash 338028711, now seen corresponding path program 44 times [2020-10-27 14:28:57,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:28:57,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679363815] [2020-10-27 14:28:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:28:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:28:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:28:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:02,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 14:29:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4823 [2020-10-27 14:29:02,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-27 14:29:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-27 14:29:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:04,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:04,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:04,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:29:04,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:04,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3015 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:04,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679363815] [2020-10-27 14:29:04,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:04,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-27 14:29:04,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988782126] [2020-10-27 14:29:04,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-27 14:29:04,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:04,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-27 14:29:04,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:29:04,256 INFO L87 Difference]: Start difference. First operand 430 states and 566 transitions. Second operand 49 states. [2020-10-27 14:29:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:04,877 INFO L93 Difference]: Finished difference Result 465 states and 610 transitions. [2020-10-27 14:29:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 14:29:04,877 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 152 [2020-10-27 14:29:04,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:04,881 INFO L225 Difference]: With dead ends: 465 [2020-10-27 14:29:04,881 INFO L226 Difference]: Without dead ends: 445 [2020-10-27 14:29:04,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:29:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-27 14:29:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 439. [2020-10-27 14:29:04,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-27 14:29:04,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 578 transitions. [2020-10-27 14:29:04,896 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 578 transitions. Word has length 152 [2020-10-27 14:29:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:04,896 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 578 transitions. [2020-10-27 14:29:04,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-27 14:29:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 578 transitions. [2020-10-27 14:29:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 14:29:04,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:04,898 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:04,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-27 14:29:04,899 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:04,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2036475979, now seen corresponding path program 45 times [2020-10-27 14:29:04,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:04,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896340130] [2020-10-27 14:29:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:04,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:09,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:09,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 14:29:09,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4930 [2020-10-27 14:29:09,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-27 14:29:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 14:29:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:11,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:11,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:11,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:11,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896340130] [2020-10-27 14:29:11,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:11,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-27 14:29:11,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25203801] [2020-10-27 14:29:11,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-27 14:29:11,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:11,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-27 14:29:11,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:29:11,600 INFO L87 Difference]: Start difference. First operand 439 states and 578 transitions. Second operand 50 states. [2020-10-27 14:29:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:12,153 INFO L93 Difference]: Finished difference Result 474 states and 622 transitions. [2020-10-27 14:29:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 14:29:12,154 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 155 [2020-10-27 14:29:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:12,157 INFO L225 Difference]: With dead ends: 474 [2020-10-27 14:29:12,157 INFO L226 Difference]: Without dead ends: 454 [2020-10-27 14:29:12,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:29:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-27 14:29:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 448. [2020-10-27 14:29:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-27 14:29:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 590 transitions. [2020-10-27 14:29:12,170 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 590 transitions. Word has length 155 [2020-10-27 14:29:12,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:12,171 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 590 transitions. [2020-10-27 14:29:12,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-27 14:29:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 590 transitions. [2020-10-27 14:29:12,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-27 14:29:12,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:12,173 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:12,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-27 14:29:12,173 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:12,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1469322791, now seen corresponding path program 46 times [2020-10-27 14:29:12,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:12,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836412230] [2020-10-27 14:29:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:17,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 14:29:17,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:29:17,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-27 14:29:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 14:29:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:19,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836412230] [2020-10-27 14:29:19,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:19,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-27 14:29:19,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501179234] [2020-10-27 14:29:19,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-27 14:29:19,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:19,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-27 14:29:19,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:29:19,064 INFO L87 Difference]: Start difference. First operand 448 states and 590 transitions. Second operand 51 states. [2020-10-27 14:29:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:19,808 INFO L93 Difference]: Finished difference Result 483 states and 634 transitions. [2020-10-27 14:29:19,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 14:29:19,809 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 158 [2020-10-27 14:29:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:19,814 INFO L225 Difference]: With dead ends: 483 [2020-10-27 14:29:19,814 INFO L226 Difference]: Without dead ends: 463 [2020-10-27 14:29:19,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:29:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-27 14:29:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 457. [2020-10-27 14:29:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-27 14:29:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 602 transitions. [2020-10-27 14:29:19,829 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 602 transitions. Word has length 158 [2020-10-27 14:29:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:19,830 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 602 transitions. [2020-10-27 14:29:19,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-27 14:29:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 602 transitions. [2020-10-27 14:29:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 14:29:19,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:19,834 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:19,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-27 14:29:19,834 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:19,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1810041547, now seen corresponding path program 47 times [2020-10-27 14:29:19,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:19,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515552784] [2020-10-27 14:29:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-27 14:29:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:26,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:26,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:26,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:26,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515552784] [2020-10-27 14:29:26,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:26,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-27 14:29:26,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121724288] [2020-10-27 14:29:26,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-27 14:29:26,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:26,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-27 14:29:26,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:29:26,848 INFO L87 Difference]: Start difference. First operand 457 states and 602 transitions. Second operand 52 states. [2020-10-27 14:29:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:27,303 INFO L93 Difference]: Finished difference Result 492 states and 646 transitions. [2020-10-27 14:29:27,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-27 14:29:27,304 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 161 [2020-10-27 14:29:27,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:27,307 INFO L225 Difference]: With dead ends: 492 [2020-10-27 14:29:27,307 INFO L226 Difference]: Without dead ends: 472 [2020-10-27 14:29:27,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:29:27,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-10-27 14:29:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 466. [2020-10-27 14:29:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-27 14:29:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 614 transitions. [2020-10-27 14:29:27,320 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 614 transitions. Word has length 161 [2020-10-27 14:29:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:27,321 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 614 transitions. [2020-10-27 14:29:27,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-27 14:29:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 614 transitions. [2020-10-27 14:29:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 14:29:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:27,323 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:27,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-27 14:29:27,323 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1140186201, now seen corresponding path program 48 times [2020-10-27 14:29:27,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:27,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395575305] [2020-10-27 14:29:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:32,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 14:29:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:34,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:34,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:34,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:34,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:29:34,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3577 backedges. 0 proven. 3577 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:34,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395575305] [2020-10-27 14:29:34,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:34,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-27 14:29:34,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588902172] [2020-10-27 14:29:34,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-27 14:29:34,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:34,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-27 14:29:34,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:29:34,403 INFO L87 Difference]: Start difference. First operand 466 states and 614 transitions. Second operand 53 states. [2020-10-27 14:29:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:35,129 INFO L93 Difference]: Finished difference Result 501 states and 658 transitions. [2020-10-27 14:29:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 14:29:35,130 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 164 [2020-10-27 14:29:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:35,133 INFO L225 Difference]: With dead ends: 501 [2020-10-27 14:29:35,133 INFO L226 Difference]: Without dead ends: 481 [2020-10-27 14:29:35,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:29:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-27 14:29:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 475. [2020-10-27 14:29:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-27 14:29:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 626 transitions. [2020-10-27 14:29:35,146 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 626 transitions. Word has length 164 [2020-10-27 14:29:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:35,146 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 626 transitions. [2020-10-27 14:29:35,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-27 14:29:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 626 transitions. [2020-10-27 14:29:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 14:29:35,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:35,148 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:35,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-27 14:29:35,148 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash 835718475, now seen corresponding path program 49 times [2020-10-27 14:29:35,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:35,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728395936] [2020-10-27 14:29:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:35,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:40,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 14:29:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 14:29:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-27 14:29:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 14:29:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:42,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3725 backedges. 0 proven. 3725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:42,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728395936] [2020-10-27 14:29:42,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:42,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-27 14:29:42,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518417888] [2020-10-27 14:29:42,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-27 14:29:42,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:42,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-27 14:29:42,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:29:42,320 INFO L87 Difference]: Start difference. First operand 475 states and 626 transitions. Second operand 54 states. [2020-10-27 14:29:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:42,940 INFO L93 Difference]: Finished difference Result 510 states and 670 transitions. [2020-10-27 14:29:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-27 14:29:42,941 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 167 [2020-10-27 14:29:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:42,944 INFO L225 Difference]: With dead ends: 510 [2020-10-27 14:29:42,944 INFO L226 Difference]: Without dead ends: 490 [2020-10-27 14:29:42,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:29:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-27 14:29:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 484. [2020-10-27 14:29:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-27 14:29:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 638 transitions. [2020-10-27 14:29:42,956 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 638 transitions. Word has length 167 [2020-10-27 14:29:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:42,956 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 638 transitions. [2020-10-27 14:29:42,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-27 14:29:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 638 transitions. [2020-10-27 14:29:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 14:29:42,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:42,958 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:42,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-27 14:29:42,958 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1809837785, now seen corresponding path program 50 times [2020-10-27 14:29:42,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:42,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282223574] [2020-10-27 14:29:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:47,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-27 14:29:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:50,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 0 proven. 3876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:50,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282223574] [2020-10-27 14:29:50,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:50,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-27 14:29:50,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499535006] [2020-10-27 14:29:50,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-27 14:29:50,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:50,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-27 14:29:50,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:29:50,188 INFO L87 Difference]: Start difference. First operand 484 states and 638 transitions. Second operand 55 states. [2020-10-27 14:29:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:50,689 INFO L93 Difference]: Finished difference Result 519 states and 682 transitions. [2020-10-27 14:29:50,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 14:29:50,690 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 170 [2020-10-27 14:29:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:50,694 INFO L225 Difference]: With dead ends: 519 [2020-10-27 14:29:50,694 INFO L226 Difference]: Without dead ends: 499 [2020-10-27 14:29:50,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:29:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-27 14:29:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 493. [2020-10-27 14:29:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-27 14:29:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 650 transitions. [2020-10-27 14:29:50,708 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 650 transitions. Word has length 170 [2020-10-27 14:29:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:50,708 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 650 transitions. [2020-10-27 14:29:50,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-27 14:29:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 650 transitions. [2020-10-27 14:29:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 14:29:50,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:50,710 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:50,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-27 14:29:50,710 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:50,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:50,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1368469451, now seen corresponding path program 51 times [2020-10-27 14:29:50,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:50,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693550171] [2020-10-27 14:29:50,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:50,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:55,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 14:29:55,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:57,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:29:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:29:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:29:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:29:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:29:58,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693550171] [2020-10-27 14:29:58,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:29:58,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-27 14:29:58,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713265944] [2020-10-27 14:29:58,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-27 14:29:58,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:29:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-27 14:29:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 14:29:58,010 INFO L87 Difference]: Start difference. First operand 493 states and 650 transitions. Second operand 56 states. [2020-10-27 14:29:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:29:58,578 INFO L93 Difference]: Finished difference Result 528 states and 694 transitions. [2020-10-27 14:29:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-27 14:29:58,579 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 173 [2020-10-27 14:29:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:29:58,582 INFO L225 Difference]: With dead ends: 528 [2020-10-27 14:29:58,582 INFO L226 Difference]: Without dead ends: 508 [2020-10-27 14:29:58,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 14:29:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-27 14:29:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 502. [2020-10-27 14:29:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-10-27 14:29:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 662 transitions. [2020-10-27 14:29:58,592 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 662 transitions. Word has length 173 [2020-10-27 14:29:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:29:58,593 INFO L481 AbstractCegarLoop]: Abstraction has 502 states and 662 transitions. [2020-10-27 14:29:58,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-27 14:29:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 662 transitions. [2020-10-27 14:29:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-27 14:29:58,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:29:58,594 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:29:58,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-27 14:29:58,595 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:29:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:29:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash -529670489, now seen corresponding path program 52 times [2020-10-27 14:29:58,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:29:58,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74847072] [2020-10-27 14:29:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:29:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:29:58,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:29:58,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-27 14:30:03,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:05,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:05,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:05,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74847072] [2020-10-27 14:30:05,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:05,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-27 14:30:05,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282963323] [2020-10-27 14:30:05,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-27 14:30:05,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:05,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-27 14:30:05,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:30:05,934 INFO L87 Difference]: Start difference. First operand 502 states and 662 transitions. Second operand 57 states. [2020-10-27 14:30:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:06,826 INFO L93 Difference]: Finished difference Result 537 states and 706 transitions. [2020-10-27 14:30:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 14:30:06,827 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 176 [2020-10-27 14:30:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:06,830 INFO L225 Difference]: With dead ends: 537 [2020-10-27 14:30:06,830 INFO L226 Difference]: Without dead ends: 517 [2020-10-27 14:30:06,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:30:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-27 14:30:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 511. [2020-10-27 14:30:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-27 14:30:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 674 transitions. [2020-10-27 14:30:06,846 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 674 transitions. Word has length 176 [2020-10-27 14:30:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:06,846 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 674 transitions. [2020-10-27 14:30:06,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-27 14:30:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 674 transitions. [2020-10-27 14:30:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-27 14:30:06,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:06,848 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:06,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-27 14:30:06,848 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:06,849 INFO L82 PathProgramCache]: Analyzing trace with hash -477203893, now seen corresponding path program 53 times [2020-10-27 14:30:06,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:06,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231455141] [2020-10-27 14:30:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:06,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 14:30:11,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:14,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:14,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:14,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:14,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231455141] [2020-10-27 14:30:14,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:14,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-27 14:30:14,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470254798] [2020-10-27 14:30:14,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-27 14:30:14,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:14,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-27 14:30:14,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:30:14,277 INFO L87 Difference]: Start difference. First operand 511 states and 674 transitions. Second operand 58 states. [2020-10-27 14:30:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:15,125 INFO L93 Difference]: Finished difference Result 546 states and 718 transitions. [2020-10-27 14:30:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-27 14:30:15,126 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 179 [2020-10-27 14:30:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:15,129 INFO L225 Difference]: With dead ends: 546 [2020-10-27 14:30:15,130 INFO L226 Difference]: Without dead ends: 526 [2020-10-27 14:30:15,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:30:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-27 14:30:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 520. [2020-10-27 14:30:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-10-27 14:30:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 686 transitions. [2020-10-27 14:30:15,139 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 686 transitions. Word has length 179 [2020-10-27 14:30:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:15,140 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 686 transitions. [2020-10-27 14:30:15,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-27 14:30:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 686 transitions. [2020-10-27 14:30:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 14:30:15,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:15,142 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:15,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-27 14:30:15,142 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash -812938201, now seen corresponding path program 54 times [2020-10-27 14:30:15,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:15,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050367110] [2020-10-27 14:30:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:20,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:20,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 14:30:20,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:20,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 14:30:20,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-27 14:30:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 14:30:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:22,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 0 proven. 4510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:22,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050367110] [2020-10-27 14:30:22,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:22,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-27 14:30:22,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960959474] [2020-10-27 14:30:22,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-27 14:30:22,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:22,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-27 14:30:22,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:30:22,768 INFO L87 Difference]: Start difference. First operand 520 states and 686 transitions. Second operand 59 states. [2020-10-27 14:30:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:23,620 INFO L93 Difference]: Finished difference Result 555 states and 730 transitions. [2020-10-27 14:30:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 14:30:23,621 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 182 [2020-10-27 14:30:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:23,624 INFO L225 Difference]: With dead ends: 555 [2020-10-27 14:30:23,624 INFO L226 Difference]: Without dead ends: 535 [2020-10-27 14:30:23,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:30:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-27 14:30:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 529. [2020-10-27 14:30:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-10-27 14:30:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 698 transitions. [2020-10-27 14:30:23,634 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 698 transitions. Word has length 182 [2020-10-27 14:30:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:23,634 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 698 transitions. [2020-10-27 14:30:23,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-27 14:30:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 698 transitions. [2020-10-27 14:30:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-27 14:30:23,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:23,636 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:23,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-27 14:30:23,636 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:23,637 INFO L82 PathProgramCache]: Analyzing trace with hash 305124555, now seen corresponding path program 55 times [2020-10-27 14:30:23,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:23,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760656254] [2020-10-27 14:30:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:23,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:28,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:28,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-27 14:30:28,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:30:28,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-27 14:30:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 14:30:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:31,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:31,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:31,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:31,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:31,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:30:31,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:31,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 0 proven. 4676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:31,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760656254] [2020-10-27 14:30:31,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:31,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-27 14:30:31,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669932238] [2020-10-27 14:30:31,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-27 14:30:31,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:31,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-27 14:30:31,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 14:30:31,273 INFO L87 Difference]: Start difference. First operand 529 states and 698 transitions. Second operand 60 states. [2020-10-27 14:30:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:32,205 INFO L93 Difference]: Finished difference Result 564 states and 742 transitions. [2020-10-27 14:30:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-27 14:30:32,206 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 185 [2020-10-27 14:30:32,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:32,209 INFO L225 Difference]: With dead ends: 564 [2020-10-27 14:30:32,209 INFO L226 Difference]: Without dead ends: 544 [2020-10-27 14:30:32,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 14:30:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-27 14:30:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2020-10-27 14:30:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-27 14:30:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 710 transitions. [2020-10-27 14:30:32,219 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 710 transitions. Word has length 185 [2020-10-27 14:30:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:32,219 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 710 transitions. [2020-10-27 14:30:32,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-27 14:30:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 710 transitions. [2020-10-27 14:30:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 14:30:32,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:32,220 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:32,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-27 14:30:32,221 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1041308071, now seen corresponding path program 56 times [2020-10-27 14:30:32,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:32,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448236698] [2020-10-27 14:30:32,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 14:30:37,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-27 14:30:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-27 14:30:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:40,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:30:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 4845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448236698] [2020-10-27 14:30:40,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:40,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-27 14:30:40,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102975246] [2020-10-27 14:30:40,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-27 14:30:40,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:40,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-27 14:30:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:30:40,102 INFO L87 Difference]: Start difference. First operand 538 states and 710 transitions. Second operand 61 states. [2020-10-27 14:30:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:41,070 INFO L93 Difference]: Finished difference Result 573 states and 754 transitions. [2020-10-27 14:30:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-27 14:30:41,071 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 188 [2020-10-27 14:30:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:41,075 INFO L225 Difference]: With dead ends: 573 [2020-10-27 14:30:41,075 INFO L226 Difference]: Without dead ends: 553 [2020-10-27 14:30:41,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:30:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-27 14:30:41,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 547. [2020-10-27 14:30:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-27 14:30:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 722 transitions. [2020-10-27 14:30:41,089 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 722 transitions. Word has length 188 [2020-10-27 14:30:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:41,090 INFO L481 AbstractCegarLoop]: Abstraction has 547 states and 722 transitions. [2020-10-27 14:30:41,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-27 14:30:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 722 transitions. [2020-10-27 14:30:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-27 14:30:41,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:41,091 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:41,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-27 14:30:41,092 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:41,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:41,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1713547445, now seen corresponding path program 57 times [2020-10-27 14:30:41,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:41,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349180105] [2020-10-27 14:30:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:41,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-27 14:30:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0