/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_running-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:46:03,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:46:03,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:46:03,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:46:03,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:46:03,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:46:03,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:46:03,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:46:03,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:46:03,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:46:03,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:46:03,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:46:03,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:46:03,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:46:03,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:46:03,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:46:03,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:46:03,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:46:03,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:46:03,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:46:03,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:46:03,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:46:03,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:46:03,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:46:03,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:46:03,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:46:03,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:46:03,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:46:03,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:46:03,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:46:03,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:46:03,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:46:03,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:46:03,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:46:03,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:46:03,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:46:03,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:46:03,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:46:03,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:46:03,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:46:03,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:46:03,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:46:03,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:46:03,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:46:03,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:46:03,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:46:03,362 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:46:03,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:46:03,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:46:03,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:46:03,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:46:03,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:46:03,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:46:03,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:46:03,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:46:03,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:46:03,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:46:03,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:46:03,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:46:03,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:46:03,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:46:03,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:46:03,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:46:03,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:46:03,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:46:03,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:46:03,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:46:03,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:46:03,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:46:03,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:46:03,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:46:03,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:46:03,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:46:03,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:46:03,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:46:03,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:46:03,924 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:46:03,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-2.i [2020-10-29 03:46:04,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442a469ae/8c3393c0145b46ee924ce86b3ab43b94/FLAGabc2592b7 [2020-10-29 03:46:04,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:46:04,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_running-2.i [2020-10-29 03:46:04,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442a469ae/8c3393c0145b46ee924ce86b3ab43b94/FLAGabc2592b7 [2020-10-29 03:46:05,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/442a469ae/8c3393c0145b46ee924ce86b3ab43b94 [2020-10-29 03:46:05,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:46:05,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:46:05,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:46:05,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:46:05,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:46:05,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229d6490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05, skipping insertion in model container [2020-10-29 03:46:05,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:46:05,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:46:05,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:46:05,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:46:05,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:46:05,461 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:46:05,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05 WrapperNode [2020-10-29 03:46:05,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:46:05,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:46:05,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:46:05,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:46:05,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... [2020-10-29 03:46:05,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:46:05,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:46:05,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:46:05,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:46:05,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:46:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:46:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:46:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:46:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:46:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:46:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:46:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:46:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:46:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:46:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:46:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:46:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:46:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:46:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:46:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:46:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:46:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:46:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:46:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:46:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:46:06,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:46:06,243 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:46:06,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:46:06 BoogieIcfgContainer [2020-10-29 03:46:06,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:46:06,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:46:06,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:46:06,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:46:06,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:46:05" (1/3) ... [2020-10-29 03:46:06,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42852a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:46:06, skipping insertion in model container [2020-10-29 03:46:06,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:46:05" (2/3) ... [2020-10-29 03:46:06,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42852a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:46:06, skipping insertion in model container [2020-10-29 03:46:06,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:46:06" (3/3) ... [2020-10-29 03:46:06,255 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2020-10-29 03:46:06,271 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:46:06,279 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:46:06,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:46:06,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:46:06,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:46:06,354 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:46:06,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:46:06,355 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:46:06,355 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:46:06,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:46:06,357 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:46:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 03:46:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:46:06,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:06,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:06,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:06,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1112199025, now seen corresponding path program 1 times [2020-10-29 03:46:06,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:06,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642288548] [2020-10-29 03:46:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:46:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:46:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-29 03:46:07,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:07,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:46:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:46:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:46:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:46:07,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:07,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:07,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 03:46:07,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:07,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:07,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:07,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642288548] [2020-10-29 03:46:07,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:46:07,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 03:46:07,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003856448] [2020-10-29 03:46:07,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:46:07,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:07,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:46:07,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:46:07,319 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-29 03:46:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:07,660 INFO L93 Difference]: Finished difference Result 78 states and 110 transitions. [2020-10-29 03:46:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:46:07,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-29 03:46:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:07,671 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:46:07,671 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:46:07,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:46:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:46:07,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-29 03:46:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 03:46:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-10-29 03:46:07,745 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 17 [2020-10-29 03:46:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:07,745 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-10-29 03:46:07,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:46:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-10-29 03:46:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:46:07,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:07,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:07,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:46:07,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:07,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1872127637, now seen corresponding path program 1 times [2020-10-29 03:46:07,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:07,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611679120] [2020-10-29 03:46:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:46:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:46:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-29 03:46:10,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:46:10,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 03:46:10,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:46:10,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:46:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:10,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:10,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:46:10,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:10,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:10,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:10,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:46:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:46:10,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611679120] [2020-10-29 03:46:10,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:10,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:46:10,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639350496] [2020-10-29 03:46:10,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:46:10,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:10,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:46:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:46:10,584 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 5 states. [2020-10-29 03:46:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:10,748 INFO L93 Difference]: Finished difference Result 95 states and 137 transitions. [2020-10-29 03:46:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:46:10,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-29 03:46:10,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:10,750 INFO L225 Difference]: With dead ends: 95 [2020-10-29 03:46:10,750 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 03:46:10,752 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 [2020-10-29 03:46:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 03:46:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-10-29 03:46:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:46:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2020-10-29 03:46:10,765 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 24 [2020-10-29 03:46:10,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:10,766 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2020-10-29 03:46:10,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:46:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2020-10-29 03:46:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:46:10,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:10,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:10,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:46:10,768 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:10,769 INFO L82 PathProgramCache]: Analyzing trace with hash 424207484, now seen corresponding path program 1 times [2020-10-29 03:46:10,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:10,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011206385] [2020-10-29 03:46:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:15,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:15,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:46:15,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:46:15,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:46:15,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:15,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:46:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:46:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:46:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:46:15,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:15,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:15,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:46:15,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:15,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:15,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:46:15,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011206385] [2020-10-29 03:46:15,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:15,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:46:15,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634120034] [2020-10-29 03:46:15,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:46:15,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:15,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:46:15,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:46:15,898 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand 6 states. [2020-10-29 03:46:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:16,107 INFO L93 Difference]: Finished difference Result 129 states and 185 transitions. [2020-10-29 03:46:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:46:16,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-29 03:46:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:16,109 INFO L225 Difference]: With dead ends: 129 [2020-10-29 03:46:16,110 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:46:16,112 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 [2020-10-29 03:46:16,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:46:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-10-29 03:46:16,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:46:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2020-10-29 03:46:16,138 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 41 [2020-10-29 03:46:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2020-10-29 03:46:16,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:46:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2020-10-29 03:46:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:46:16,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:16,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:16,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:46:16,143 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:16,144 INFO L82 PathProgramCache]: Analyzing trace with hash -352161673, now seen corresponding path program 2 times [2020-10-29 03:46:16,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:16,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654890710] [2020-10-29 03:46:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:16,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:16,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:21,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:21,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:46:21,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:46:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:46:21,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:21,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:46:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:46:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:46:21,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:46:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:21,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:21,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:21,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:21,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:46:21,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:21,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:21,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:21,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:46:21,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654890710] [2020-10-29 03:46:21,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:21,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:46:21,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521278253] [2020-10-29 03:46:21,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:46:21,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:21,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:46:21,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:46:21,432 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand 9 states. [2020-10-29 03:46:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:21,955 INFO L93 Difference]: Finished difference Result 155 states and 225 transitions. [2020-10-29 03:46:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:46:21,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-29 03:46:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:21,960 INFO L225 Difference]: With dead ends: 155 [2020-10-29 03:46:21,960 INFO L226 Difference]: Without dead ends: 129 [2020-10-29 03:46:21,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:46:21,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-29 03:46:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2020-10-29 03:46:21,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 03:46:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 135 transitions. [2020-10-29 03:46:21,986 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 135 transitions. Word has length 53 [2020-10-29 03:46:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:21,987 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 135 transitions. [2020-10-29 03:46:21,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:46:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 135 transitions. [2020-10-29 03:46:21,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:46:21,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:21,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:21,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:46:21,990 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash -2041105415, now seen corresponding path program 1 times [2020-10-29 03:46:21,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:21,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995241177] [2020-10-29 03:46:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:27,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:46:27,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:27,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:46:27,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:27,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:46:27,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:46:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:46:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:27,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:46:27,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:27,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-29 03:46:27,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995241177] [2020-10-29 03:46:27,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:27,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:46:27,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456596234] [2020-10-29 03:46:27,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:46:27,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:27,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:46:27,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:46:27,302 INFO L87 Difference]: Start difference. First operand 98 states and 135 transitions. Second operand 8 states. [2020-10-29 03:46:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:27,574 INFO L93 Difference]: Finished difference Result 237 states and 344 transitions. [2020-10-29 03:46:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:46:27,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-29 03:46:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:27,577 INFO L225 Difference]: With dead ends: 237 [2020-10-29 03:46:27,577 INFO L226 Difference]: Without dead ends: 186 [2020-10-29 03:46:27,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:46:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-29 03:46:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 136. [2020-10-29 03:46:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 03:46:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2020-10-29 03:46:27,593 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 53 [2020-10-29 03:46:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:27,594 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2020-10-29 03:46:27,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:46:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2020-10-29 03:46:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:46:27,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:27,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:27,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:46:27,596 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:27,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:27,597 INFO L82 PathProgramCache]: Analyzing trace with hash 314410041, now seen corresponding path program 1 times [2020-10-29 03:46:27,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:27,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3552902] [2020-10-29 03:46:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:27,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:46:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:46:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:46:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:46:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:46:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:46:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:32,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:32,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:32,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:32,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:32,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:32,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:32,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:46:32,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3552902] [2020-10-29 03:46:32,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:32,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:46:32,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550564532] [2020-10-29 03:46:32,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:46:32,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:46:32,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:46:32,810 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand 11 states. [2020-10-29 03:46:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:33,666 INFO L93 Difference]: Finished difference Result 271 states and 370 transitions. [2020-10-29 03:46:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:46:33,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-29 03:46:33,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:33,669 INFO L225 Difference]: With dead ends: 271 [2020-10-29 03:46:33,670 INFO L226 Difference]: Without dead ends: 255 [2020-10-29 03:46:33,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:46:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-29 03:46:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 188. [2020-10-29 03:46:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-29 03:46:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 256 transitions. [2020-10-29 03:46:33,710 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 256 transitions. Word has length 53 [2020-10-29 03:46:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:33,710 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 256 transitions. [2020-10-29 03:46:33,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:46:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 256 transitions. [2020-10-29 03:46:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:46:33,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:33,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:33,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:46:33,715 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash 572575479, now seen corresponding path program 2 times [2020-10-29 03:46:33,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:33,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627476324] [2020-10-29 03:46:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:38,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:46:38,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:46:38,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:38,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:46:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 03:46:38,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:46:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:39,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:39,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:39,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:46:39,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:39,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:46:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:46:39,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627476324] [2020-10-29 03:46:39,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:39,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:46:39,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144149996] [2020-10-29 03:46:39,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:46:39,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:39,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:46:39,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:46:39,070 INFO L87 Difference]: Start difference. First operand 188 states and 256 transitions. Second operand 12 states. [2020-10-29 03:46:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:39,898 INFO L93 Difference]: Finished difference Result 326 states and 449 transitions. [2020-10-29 03:46:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:46:39,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-29 03:46:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:39,903 INFO L225 Difference]: With dead ends: 326 [2020-10-29 03:46:39,904 INFO L226 Difference]: Without dead ends: 301 [2020-10-29 03:46:39,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:46:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-29 03:46:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2020-10-29 03:46:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-29 03:46:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 348 transitions. [2020-10-29 03:46:39,942 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 348 transitions. Word has length 53 [2020-10-29 03:46:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:39,943 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 348 transitions. [2020-10-29 03:46:39,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:46:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 348 transitions. [2020-10-29 03:46:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:46:39,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:39,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:39,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:46:39,953 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:39,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:39,953 INFO L82 PathProgramCache]: Analyzing trace with hash 859606839, now seen corresponding path program 3 times [2020-10-29 03:46:39,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:39,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70165430] [2020-10-29 03:46:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:40,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:44,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:44,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:46:44,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:46:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:46:44,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:44,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:46:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:46:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:46:44,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:45,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:45,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:45,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:46:45,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:45,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:45,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 03:46:45,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70165430] [2020-10-29 03:46:45,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:45,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:46:45,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493973864] [2020-10-29 03:46:45,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:46:45,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:46:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:46:45,077 INFO L87 Difference]: Start difference. First operand 252 states and 348 transitions. Second operand 7 states. [2020-10-29 03:46:45,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:45,295 INFO L93 Difference]: Finished difference Result 557 states and 778 transitions. [2020-10-29 03:46:45,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:46:45,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-29 03:46:45,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:45,298 INFO L225 Difference]: With dead ends: 557 [2020-10-29 03:46:45,299 INFO L226 Difference]: Without dead ends: 318 [2020-10-29 03:46:45,300 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 [2020-10-29 03:46:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-29 03:46:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 284. [2020-10-29 03:46:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-29 03:46:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 388 transitions. [2020-10-29 03:46:45,316 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 388 transitions. Word has length 53 [2020-10-29 03:46:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:45,316 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 388 transitions. [2020-10-29 03:46:45,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:46:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 388 transitions. [2020-10-29 03:46:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:46:45,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:45,318 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:45,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:46:45,319 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1278789928, now seen corresponding path program 4 times [2020-10-29 03:46:45,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:45,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726452239] [2020-10-29 03:46:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:45,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:45,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:45,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:50,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:50,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:46:50,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:46:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:46:50,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:50,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:46:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:46:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:46:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:50,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:50,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:50,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:50,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:50,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:50,640 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:46:50,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726452239] [2020-10-29 03:46:50,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:50,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:46:50,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638311473] [2020-10-29 03:46:50,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:46:50,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:50,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:46:50,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:46:50,646 INFO L87 Difference]: Start difference. First operand 284 states and 388 transitions. Second operand 10 states. [2020-10-29 03:46:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:51,102 INFO L93 Difference]: Finished difference Result 512 states and 705 transitions. [2020-10-29 03:46:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:46:51,102 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-29 03:46:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:51,107 INFO L225 Difference]: With dead ends: 512 [2020-10-29 03:46:51,107 INFO L226 Difference]: Without dead ends: 442 [2020-10-29 03:46:51,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:46:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-29 03:46:51,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 378. [2020-10-29 03:46:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-10-29 03:46:51,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 514 transitions. [2020-10-29 03:46:51,127 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 514 transitions. Word has length 65 [2020-10-29 03:46:51,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:51,127 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 514 transitions. [2020-10-29 03:46:51,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:46:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 514 transitions. [2020-10-29 03:46:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:46:51,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:51,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:51,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:46:51,130 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1076725528, now seen corresponding path program 5 times [2020-10-29 03:46:51,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:51,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619376893] [2020-10-29 03:46:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:46:56,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:56,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:46:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:46:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:46:56,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:46:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:46:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:46:56,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:46:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:46:56,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:46:56,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:46:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:46:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:46:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:46:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:46:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 58 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:46:56,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619376893] [2020-10-29 03:46:56,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:46:56,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:46:56,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383084923] [2020-10-29 03:46:56,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:46:56,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:46:56,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:46:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:46:56,417 INFO L87 Difference]: Start difference. First operand 378 states and 514 transitions. Second operand 14 states. [2020-10-29 03:46:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:46:57,471 INFO L93 Difference]: Finished difference Result 692 states and 951 transitions. [2020-10-29 03:46:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:46:57,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-29 03:46:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:46:57,477 INFO L225 Difference]: With dead ends: 692 [2020-10-29 03:46:57,477 INFO L226 Difference]: Without dead ends: 667 [2020-10-29 03:46:57,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:46:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-10-29 03:46:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 605. [2020-10-29 03:46:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-29 03:46:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 837 transitions. [2020-10-29 03:46:57,507 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 837 transitions. Word has length 65 [2020-10-29 03:46:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:46:57,507 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 837 transitions. [2020-10-29 03:46:57,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:46:57,508 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 837 transitions. [2020-10-29 03:46:57,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:46:57,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:46:57,510 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:46:57,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:46:57,510 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:46:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:46:57,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1363756888, now seen corresponding path program 1 times [2020-10-29 03:46:57,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:46:57,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755161325] [2020-10-29 03:46:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:46:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:46:57,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:46:59,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:00,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:02,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:47:02,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-29 03:47:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:47:02,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:02,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:47:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 03:47:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:47:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:02,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:02,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:02,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:02,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-29 03:47:02,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755161325] [2020-10-29 03:47:02,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:02,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:47:02,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097972545] [2020-10-29 03:47:02,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:47:02,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:02,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:47:02,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:47:02,665 INFO L87 Difference]: Start difference. First operand 605 states and 837 transitions. Second operand 10 states. [2020-10-29 03:47:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:03,095 INFO L93 Difference]: Finished difference Result 1105 states and 1518 transitions. [2020-10-29 03:47:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:47:03,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-29 03:47:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:03,103 INFO L225 Difference]: With dead ends: 1105 [2020-10-29 03:47:03,103 INFO L226 Difference]: Without dead ends: 1098 [2020-10-29 03:47:03,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:47:03,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-29 03:47:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1027. [2020-10-29 03:47:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2020-10-29 03:47:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1422 transitions. [2020-10-29 03:47:03,172 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1422 transitions. Word has length 65 [2020-10-29 03:47:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:03,172 INFO L481 AbstractCegarLoop]: Abstraction has 1027 states and 1422 transitions. [2020-10-29 03:47:03,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:47:03,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1422 transitions. [2020-10-29 03:47:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:47:03,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:03,180 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:03,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:47:03,181 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:03,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1621922326, now seen corresponding path program 2 times [2020-10-29 03:47:03,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:03,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67520881] [2020-10-29 03:47:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:08,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:47:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:47:08,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:08,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 03:47:08,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67520881] [2020-10-29 03:47:08,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:08,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:47:08,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460257973] [2020-10-29 03:47:08,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:47:08,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:08,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:47:08,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:47:08,293 INFO L87 Difference]: Start difference. First operand 1027 states and 1422 transitions. Second operand 8 states. [2020-10-29 03:47:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:08,517 INFO L93 Difference]: Finished difference Result 2229 states and 3093 transitions. [2020-10-29 03:47:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:47:08,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-29 03:47:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:08,528 INFO L225 Difference]: With dead ends: 2229 [2020-10-29 03:47:08,528 INFO L226 Difference]: Without dead ends: 1217 [2020-10-29 03:47:08,531 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 [2020-10-29 03:47:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-10-29 03:47:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1111. [2020-10-29 03:47:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-29 03:47:08,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1524 transitions. [2020-10-29 03:47:08,590 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1524 transitions. Word has length 65 [2020-10-29 03:47:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:08,591 INFO L481 AbstractCegarLoop]: Abstraction has 1111 states and 1524 transitions. [2020-10-29 03:47:08,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:47:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1524 transitions. [2020-10-29 03:47:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:47:08,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:08,597 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:08,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:47:08,598 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:08,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:08,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1007454511, now seen corresponding path program 6 times [2020-10-29 03:47:08,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:08,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175643324] [2020-10-29 03:47:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:08,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:08,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:08,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:09,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:13,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:13,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:47:13,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:13,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:13,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:13,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 40 proven. 63 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 03:47:13,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175643324] [2020-10-29 03:47:13,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:13,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:47:13,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672158302] [2020-10-29 03:47:13,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:47:13,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:13,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:47:13,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:47:13,850 INFO L87 Difference]: Start difference. First operand 1111 states and 1524 transitions. Second operand 13 states. [2020-10-29 03:47:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:14,930 INFO L93 Difference]: Finished difference Result 1303 states and 1783 transitions. [2020-10-29 03:47:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:47:14,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-10-29 03:47:14,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:14,938 INFO L225 Difference]: With dead ends: 1303 [2020-10-29 03:47:14,938 INFO L226 Difference]: Without dead ends: 1279 [2020-10-29 03:47:14,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:47:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-10-29 03:47:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1229. [2020-10-29 03:47:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-10-29 03:47:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1688 transitions. [2020-10-29 03:47:14,996 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1688 transitions. Word has length 77 [2020-10-29 03:47:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:14,997 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1688 transitions. [2020-10-29 03:47:14,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:47:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1688 transitions. [2020-10-29 03:47:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:47:15,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:15,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:15,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:47:15,001 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:15,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1598569043, now seen corresponding path program 7 times [2020-10-29 03:47:15,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:15,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270350450] [2020-10-29 03:47:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:15,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:20,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:47:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:20,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:20,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:20,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:20,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:20,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:20,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:20,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:20,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 03:47:20,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270350450] [2020-10-29 03:47:20,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:20,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:47:20,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577812781] [2020-10-29 03:47:20,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:47:20,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:20,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:47:20,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:47:20,134 INFO L87 Difference]: Start difference. First operand 1229 states and 1688 transitions. Second operand 9 states. [2020-10-29 03:47:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:20,385 INFO L93 Difference]: Finished difference Result 2679 states and 3709 transitions. [2020-10-29 03:47:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:47:20,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-29 03:47:20,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:20,393 INFO L225 Difference]: With dead ends: 2679 [2020-10-29 03:47:20,393 INFO L226 Difference]: Without dead ends: 1467 [2020-10-29 03:47:20,398 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 [2020-10-29 03:47:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2020-10-29 03:47:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1331. [2020-10-29 03:47:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-10-29 03:47:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1822 transitions. [2020-10-29 03:47:20,457 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1822 transitions. Word has length 77 [2020-10-29 03:47:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:20,459 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 1822 transitions. [2020-10-29 03:47:20,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:47:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1822 transitions. [2020-10-29 03:47:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 03:47:20,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:20,463 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:20,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:47:20,463 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:20,464 INFO L82 PathProgramCache]: Analyzing trace with hash 915906416, now seen corresponding path program 8 times [2020-10-29 03:47:20,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:20,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026714876] [2020-10-29 03:47:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:20,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:25,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:25,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 03:47:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:47:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:47:25,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:25,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:47:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 03:47:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:47:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:25,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:25,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:25,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-29 03:47:25,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026714876] [2020-10-29 03:47:25,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:25,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:47:25,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762572904] [2020-10-29 03:47:25,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:47:25,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:25,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:47:25,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:47:25,604 INFO L87 Difference]: Start difference. First operand 1331 states and 1822 transitions. Second operand 10 states. [2020-10-29 03:47:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:25,882 INFO L93 Difference]: Finished difference Result 2905 states and 4015 transitions. [2020-10-29 03:47:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:47:25,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-10-29 03:47:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:25,890 INFO L225 Difference]: With dead ends: 2905 [2020-10-29 03:47:25,890 INFO L226 Difference]: Without dead ends: 1593 [2020-10-29 03:47:25,894 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 [2020-10-29 03:47:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2020-10-29 03:47:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1441. [2020-10-29 03:47:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2020-10-29 03:47:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1972 transitions. [2020-10-29 03:47:25,956 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1972 transitions. Word has length 89 [2020-10-29 03:47:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:25,956 INFO L481 AbstractCegarLoop]: Abstraction has 1441 states and 1972 transitions. [2020-10-29 03:47:25,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:47:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1972 transitions. [2020-10-29 03:47:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:47:25,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:25,960 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:25,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:47:25,960 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:25,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:25,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1178318289, now seen corresponding path program 9 times [2020-10-29 03:47:25,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:25,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198568724] [2020-10-29 03:47:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:47:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:47:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:47:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:30,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:47:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:47:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:47:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:31,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:31,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2020-10-29 03:47:31,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198568724] [2020-10-29 03:47:31,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:31,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:47:31,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866264503] [2020-10-29 03:47:31,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:47:31,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:31,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:47:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:47:31,122 INFO L87 Difference]: Start difference. First operand 1441 states and 1972 transitions. Second operand 11 states. [2020-10-29 03:47:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:31,453 INFO L93 Difference]: Finished difference Result 3123 states and 4313 transitions. [2020-10-29 03:47:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:47:31,454 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-10-29 03:47:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:31,463 INFO L225 Difference]: With dead ends: 3123 [2020-10-29 03:47:31,463 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 03:47:31,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:47:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 03:47:31,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1551. [2020-10-29 03:47:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1551 states. [2020-10-29 03:47:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2122 transitions. [2020-10-29 03:47:31,541 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2122 transitions. Word has length 101 [2020-10-29 03:47:31,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:31,541 INFO L481 AbstractCegarLoop]: Abstraction has 1551 states and 2122 transitions. [2020-10-29 03:47:31,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:47:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2122 transitions. [2020-10-29 03:47:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-29 03:47:31,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:31,546 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:31,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:47:31,546 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1530646516, now seen corresponding path program 10 times [2020-10-29 03:47:31,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:31,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507057862] [2020-10-29 03:47:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:36,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:36,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 03:47:36,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:47:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:47:36,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:36,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:47:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 03:47:36,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:47:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:36,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-29 03:47:36,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507057862] [2020-10-29 03:47:36,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:36,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:47:36,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490063108] [2020-10-29 03:47:36,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:47:36,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:36,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:47:36,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:47:36,729 INFO L87 Difference]: Start difference. First operand 1551 states and 2122 transitions. Second operand 12 states. [2020-10-29 03:47:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:37,069 INFO L93 Difference]: Finished difference Result 3341 states and 4611 transitions. [2020-10-29 03:47:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:47:37,069 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-10-29 03:47:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:37,078 INFO L225 Difference]: With dead ends: 3341 [2020-10-29 03:47:37,078 INFO L226 Difference]: Without dead ends: 1813 [2020-10-29 03:47:37,083 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 [2020-10-29 03:47:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2020-10-29 03:47:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1661. [2020-10-29 03:47:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1661 states. [2020-10-29 03:47:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2272 transitions. [2020-10-29 03:47:37,165 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2272 transitions. Word has length 113 [2020-10-29 03:47:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:37,165 INFO L481 AbstractCegarLoop]: Abstraction has 1661 states and 2272 transitions. [2020-10-29 03:47:37,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:47:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2272 transitions. [2020-10-29 03:47:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 03:47:37,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:37,170 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:37,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:47:37,170 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:37,171 INFO L82 PathProgramCache]: Analyzing trace with hash 672053259, now seen corresponding path program 11 times [2020-10-29 03:47:37,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:37,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803250099] [2020-10-29 03:47:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:47:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:42,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:42,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:47:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:42,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2020-10-29 03:47:42,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803250099] [2020-10-29 03:47:42,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:42,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:47:42,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012217769] [2020-10-29 03:47:42,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:47:42,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:42,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:47:42,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:47:42,361 INFO L87 Difference]: Start difference. First operand 1661 states and 2272 transitions. Second operand 13 states. [2020-10-29 03:47:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:42,740 INFO L93 Difference]: Finished difference Result 3559 states and 4909 transitions. [2020-10-29 03:47:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:47:42,741 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 125 [2020-10-29 03:47:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:42,751 INFO L225 Difference]: With dead ends: 3559 [2020-10-29 03:47:42,751 INFO L226 Difference]: Without dead ends: 1923 [2020-10-29 03:47:42,756 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 [2020-10-29 03:47:42,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-10-29 03:47:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1771. [2020-10-29 03:47:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1771 states. [2020-10-29 03:47:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2422 transitions. [2020-10-29 03:47:42,832 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2422 transitions. Word has length 125 [2020-10-29 03:47:42,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:42,832 INFO L481 AbstractCegarLoop]: Abstraction has 1771 states and 2422 transitions. [2020-10-29 03:47:42,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:47:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2422 transitions. [2020-10-29 03:47:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 03:47:42,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:42,840 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:42,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:47:42,840 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:42,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash 198741672, now seen corresponding path program 12 times [2020-10-29 03:47:42,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:42,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384526536] [2020-10-29 03:47:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:47,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:47:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:48,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:48,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:48,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:48,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2020-10-29 03:47:48,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384526536] [2020-10-29 03:47:48,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:48,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:47:48,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078080296] [2020-10-29 03:47:48,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:47:48,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:48,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:47:48,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:47:48,062 INFO L87 Difference]: Start difference. First operand 1771 states and 2422 transitions. Second operand 14 states. [2020-10-29 03:47:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:48,500 INFO L93 Difference]: Finished difference Result 3777 states and 5207 transitions. [2020-10-29 03:47:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:47:48,501 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 137 [2020-10-29 03:47:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:48,511 INFO L225 Difference]: With dead ends: 3777 [2020-10-29 03:47:48,512 INFO L226 Difference]: Without dead ends: 2033 [2020-10-29 03:47:48,516 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 [2020-10-29 03:47:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2020-10-29 03:47:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1881. [2020-10-29 03:47:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-29 03:47:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2572 transitions. [2020-10-29 03:47:48,590 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2572 transitions. Word has length 137 [2020-10-29 03:47:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:48,591 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2572 transitions. [2020-10-29 03:47:48,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:47:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2572 transitions. [2020-10-29 03:47:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 03:47:48,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:48,596 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:48,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:47:48,597 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:48,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:48,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1401848807, now seen corresponding path program 13 times [2020-10-29 03:47:48,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:48,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308528138] [2020-10-29 03:47:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:47:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:53,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:53,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:53,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:53,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:47:53,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:53,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:53,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-10-29 03:47:53,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308528138] [2020-10-29 03:47:53,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:53,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:47:53,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188367015] [2020-10-29 03:47:53,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:47:53,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:53,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:47:53,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:47:53,835 INFO L87 Difference]: Start difference. First operand 1881 states and 2572 transitions. Second operand 15 states. [2020-10-29 03:47:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:47:54,294 INFO L93 Difference]: Finished difference Result 3995 states and 5505 transitions. [2020-10-29 03:47:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:47:54,294 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 149 [2020-10-29 03:47:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:47:54,305 INFO L225 Difference]: With dead ends: 3995 [2020-10-29 03:47:54,305 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 03:47:54,310 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 [2020-10-29 03:47:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 03:47:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1991. [2020-10-29 03:47:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-10-29 03:47:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2722 transitions. [2020-10-29 03:47:54,397 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2722 transitions. Word has length 149 [2020-10-29 03:47:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:47:54,397 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2722 transitions. [2020-10-29 03:47:54,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:47:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2722 transitions. [2020-10-29 03:47:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 03:47:54,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:47:54,404 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:47:54,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:47:54,404 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:47:54,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:47:54,405 INFO L82 PathProgramCache]: Analyzing trace with hash 873970500, now seen corresponding path program 14 times [2020-10-29 03:47:54,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:47:54,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080971706] [2020-10-29 03:47:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:47:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:47:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 03:47:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:47:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:47:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:47:59,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:47:59,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:47:59,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:47:59,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:47:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:47:59,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:47:59,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:47:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:47:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:47:59,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:47:59,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:47:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2020-10-29 03:47:59,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080971706] [2020-10-29 03:47:59,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:47:59,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:47:59,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750752675] [2020-10-29 03:47:59,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:47:59,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:47:59,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:47:59,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:47:59,715 INFO L87 Difference]: Start difference. First operand 1991 states and 2722 transitions. Second operand 16 states. [2020-10-29 03:48:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:00,184 INFO L93 Difference]: Finished difference Result 4213 states and 5803 transitions. [2020-10-29 03:48:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:48:00,185 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 161 [2020-10-29 03:48:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:00,195 INFO L225 Difference]: With dead ends: 4213 [2020-10-29 03:48:00,196 INFO L226 Difference]: Without dead ends: 2253 [2020-10-29 03:48:00,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:48:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-10-29 03:48:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2101. [2020-10-29 03:48:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-10-29 03:48:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2872 transitions. [2020-10-29 03:48:00,277 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2872 transitions. Word has length 161 [2020-10-29 03:48:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:00,277 INFO L481 AbstractCegarLoop]: Abstraction has 2101 states and 2872 transitions. [2020-10-29 03:48:00,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:48:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2872 transitions. [2020-10-29 03:48:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 03:48:00,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:00,283 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:00,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:48:00,284 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:00,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2108337603, now seen corresponding path program 15 times [2020-10-29 03:48:00,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:00,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758590734] [2020-10-29 03:48:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:00,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:05,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:05,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 03:48:05,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:48:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 03:48:05,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:05,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:48:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 03:48:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:48:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:05,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:05,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:05,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:05,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:05,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:05,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2020-10-29 03:48:05,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758590734] [2020-10-29 03:48:05,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:05,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:48:05,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100832836] [2020-10-29 03:48:05,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:48:05,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:05,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:48:05,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:48:05,595 INFO L87 Difference]: Start difference. First operand 2101 states and 2872 transitions. Second operand 17 states. [2020-10-29 03:48:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:06,065 INFO L93 Difference]: Finished difference Result 4431 states and 6101 transitions. [2020-10-29 03:48:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:48:06,069 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 173 [2020-10-29 03:48:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:06,080 INFO L225 Difference]: With dead ends: 4431 [2020-10-29 03:48:06,081 INFO L226 Difference]: Without dead ends: 2363 [2020-10-29 03:48:06,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:48:06,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-10-29 03:48:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2211. [2020-10-29 03:48:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2020-10-29 03:48:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3022 transitions. [2020-10-29 03:48:06,174 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3022 transitions. Word has length 173 [2020-10-29 03:48:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:06,174 INFO L481 AbstractCegarLoop]: Abstraction has 2211 states and 3022 transitions. [2020-10-29 03:48:06,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:48:06,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3022 transitions. [2020-10-29 03:48:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 03:48:06,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:06,180 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:06,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:48:06,181 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:06,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2093266400, now seen corresponding path program 16 times [2020-10-29 03:48:06,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:06,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144084433] [2020-10-29 03:48:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:06,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:11,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:11,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:48:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:11,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2020-10-29 03:48:11,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144084433] [2020-10-29 03:48:11,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:11,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:48:11,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890922471] [2020-10-29 03:48:11,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:48:11,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:11,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:48:11,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:48:11,516 INFO L87 Difference]: Start difference. First operand 2211 states and 3022 transitions. Second operand 18 states. [2020-10-29 03:48:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:12,018 INFO L93 Difference]: Finished difference Result 4649 states and 6399 transitions. [2020-10-29 03:48:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:48:12,020 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 185 [2020-10-29 03:48:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:12,032 INFO L225 Difference]: With dead ends: 4649 [2020-10-29 03:48:12,032 INFO L226 Difference]: Without dead ends: 2473 [2020-10-29 03:48:12,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:48:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2020-10-29 03:48:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2321. [2020-10-29 03:48:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2020-10-29 03:48:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3172 transitions. [2020-10-29 03:48:12,120 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3172 transitions. Word has length 185 [2020-10-29 03:48:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:12,120 INFO L481 AbstractCegarLoop]: Abstraction has 2321 states and 3172 transitions. [2020-10-29 03:48:12,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:48:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3172 transitions. [2020-10-29 03:48:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-29 03:48:12,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:12,127 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:12,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:48:12,128 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:12,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash -540396129, now seen corresponding path program 17 times [2020-10-29 03:48:12,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:12,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238018023] [2020-10-29 03:48:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:17,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:48:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:17,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:17,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2020-10-29 03:48:17,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238018023] [2020-10-29 03:48:17,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:17,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:48:17,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327092393] [2020-10-29 03:48:17,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:48:17,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:17,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:48:17,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:48:17,499 INFO L87 Difference]: Start difference. First operand 2321 states and 3172 transitions. Second operand 19 states. [2020-10-29 03:48:18,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:18,022 INFO L93 Difference]: Finished difference Result 4867 states and 6697 transitions. [2020-10-29 03:48:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:48:18,023 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 197 [2020-10-29 03:48:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:18,031 INFO L225 Difference]: With dead ends: 4867 [2020-10-29 03:48:18,031 INFO L226 Difference]: Without dead ends: 2583 [2020-10-29 03:48:18,036 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 [2020-10-29 03:48:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2020-10-29 03:48:18,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2431. [2020-10-29 03:48:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-29 03:48:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3322 transitions. [2020-10-29 03:48:18,131 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3322 transitions. Word has length 197 [2020-10-29 03:48:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:18,131 INFO L481 AbstractCegarLoop]: Abstraction has 2431 states and 3322 transitions. [2020-10-29 03:48:18,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:48:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3322 transitions. [2020-10-29 03:48:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 03:48:18,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:18,139 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:18,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:48:18,139 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:18,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:18,139 INFO L82 PathProgramCache]: Analyzing trace with hash -64848260, now seen corresponding path program 18 times [2020-10-29 03:48:18,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:18,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555933137] [2020-10-29 03:48:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 03:48:23,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:48:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:48:23,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:48:23,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 03:48:23,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:48:23,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:23,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:23,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:23,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:23,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2020-10-29 03:48:23,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555933137] [2020-10-29 03:48:23,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:23,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:48:23,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931793957] [2020-10-29 03:48:23,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:48:23,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:48:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:48:23,540 INFO L87 Difference]: Start difference. First operand 2431 states and 3322 transitions. Second operand 20 states. [2020-10-29 03:48:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:24,098 INFO L93 Difference]: Finished difference Result 5085 states and 6995 transitions. [2020-10-29 03:48:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:48:24,099 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 209 [2020-10-29 03:48:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:24,105 INFO L225 Difference]: With dead ends: 5085 [2020-10-29 03:48:24,105 INFO L226 Difference]: Without dead ends: 2693 [2020-10-29 03:48:24,110 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 [2020-10-29 03:48:24,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2020-10-29 03:48:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2541. [2020-10-29 03:48:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2541 states. [2020-10-29 03:48:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 3472 transitions. [2020-10-29 03:48:24,199 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 3472 transitions. Word has length 209 [2020-10-29 03:48:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:24,200 INFO L481 AbstractCegarLoop]: Abstraction has 2541 states and 3472 transitions. [2020-10-29 03:48:24,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:48:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 3472 transitions. [2020-10-29 03:48:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-29 03:48:24,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:24,207 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 13, 13, 13, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:24,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:48:24,208 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:24,208 INFO L82 PathProgramCache]: Analyzing trace with hash 190061435, now seen corresponding path program 19 times [2020-10-29 03:48:24,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:24,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435102240] [2020-10-29 03:48:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:24,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:24,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 03:48:29,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:48:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:48:29,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:48:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:48:29,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 03:48:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:48:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:29,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:29,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:29,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:48:29,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:29,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:48:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2020-10-29 03:48:29,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435102240] [2020-10-29 03:48:29,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:29,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:48:29,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442002669] [2020-10-29 03:48:29,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:48:29,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:48:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:48:29,715 INFO L87 Difference]: Start difference. First operand 2541 states and 3472 transitions. Second operand 21 states. [2020-10-29 03:48:30,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:30,306 INFO L93 Difference]: Finished difference Result 5303 states and 7293 transitions. [2020-10-29 03:48:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:48:30,307 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 221 [2020-10-29 03:48:30,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:30,312 INFO L225 Difference]: With dead ends: 5303 [2020-10-29 03:48:30,312 INFO L226 Difference]: Without dead ends: 2803 [2020-10-29 03:48:30,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:48:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2020-10-29 03:48:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2651. [2020-10-29 03:48:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2651 states. [2020-10-29 03:48:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3622 transitions. [2020-10-29 03:48:30,412 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3622 transitions. Word has length 221 [2020-10-29 03:48:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:30,412 INFO L481 AbstractCegarLoop]: Abstraction has 2651 states and 3622 transitions. [2020-10-29 03:48:30,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:48:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3622 transitions. [2020-10-29 03:48:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-29 03:48:30,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:30,421 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 14, 14, 14, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:30,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:48:30,421 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:30,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1619782376, now seen corresponding path program 20 times [2020-10-29 03:48:30,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:30,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081870158] [2020-10-29 03:48:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:30,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:48:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:35,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:35,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:35,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:35,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:48:35,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:35,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:35,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:48:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 1413 trivial. 0 not checked. [2020-10-29 03:48:35,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081870158] [2020-10-29 03:48:35,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:35,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:48:35,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612431538] [2020-10-29 03:48:35,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:48:35,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:35,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:48:35,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:48:35,993 INFO L87 Difference]: Start difference. First operand 2651 states and 3622 transitions. Second operand 22 states. [2020-10-29 03:48:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:36,615 INFO L93 Difference]: Finished difference Result 5521 states and 7591 transitions. [2020-10-29 03:48:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:48:36,615 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 233 [2020-10-29 03:48:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:36,621 INFO L225 Difference]: With dead ends: 5521 [2020-10-29 03:48:36,622 INFO L226 Difference]: Without dead ends: 2913 [2020-10-29 03:48:36,626 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 [2020-10-29 03:48:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2020-10-29 03:48:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2761. [2020-10-29 03:48:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2761 states. [2020-10-29 03:48:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3772 transitions. [2020-10-29 03:48:36,722 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3772 transitions. Word has length 233 [2020-10-29 03:48:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:36,722 INFO L481 AbstractCegarLoop]: Abstraction has 2761 states and 3772 transitions. [2020-10-29 03:48:36,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:48:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3772 transitions. [2020-10-29 03:48:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 03:48:36,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:36,731 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 15, 15, 15, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:36,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:48:36,732 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1236229975, now seen corresponding path program 21 times [2020-10-29 03:48:36,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:36,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052829961] [2020-10-29 03:48:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:36,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:36,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:41,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:41,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 03:48:41,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:48:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 03:48:41,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:41,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:48:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 03:48:41,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:48:41,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:42,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:42,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:42,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:42,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:42,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:42,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:42,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:42,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:42,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:48:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2109 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2020-10-29 03:48:42,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052829961] [2020-10-29 03:48:42,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:42,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:48:42,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111024744] [2020-10-29 03:48:42,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:48:42,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:48:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:48:42,274 INFO L87 Difference]: Start difference. First operand 2761 states and 3772 transitions. Second operand 23 states. [2020-10-29 03:48:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:42,970 INFO L93 Difference]: Finished difference Result 5739 states and 7889 transitions. [2020-10-29 03:48:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:48:42,976 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 245 [2020-10-29 03:48:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:42,981 INFO L225 Difference]: With dead ends: 5739 [2020-10-29 03:48:42,981 INFO L226 Difference]: Without dead ends: 3023 [2020-10-29 03:48:42,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:48:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-10-29 03:48:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2871. [2020-10-29 03:48:43,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2871 states. [2020-10-29 03:48:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2871 states to 2871 states and 3922 transitions. [2020-10-29 03:48:43,086 INFO L78 Accepts]: Start accepts. Automaton has 2871 states and 3922 transitions. Word has length 245 [2020-10-29 03:48:43,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:43,087 INFO L481 AbstractCegarLoop]: Abstraction has 2871 states and 3922 transitions. [2020-10-29 03:48:43,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:48:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states and 3922 transitions. [2020-10-29 03:48:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 03:48:43,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:43,097 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:43,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:48:43,097 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:43,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1258060212, now seen corresponding path program 22 times [2020-10-29 03:48:43,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:43,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198034595] [2020-10-29 03:48:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:48:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-29 03:48:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:48:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:48,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:48:48,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:48,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 1750 trivial. 0 not checked. [2020-10-29 03:48:48,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198034595] [2020-10-29 03:48:48,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:48,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:48:48,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68673569] [2020-10-29 03:48:48,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:48:48,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:48,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:48:48,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:48:48,682 INFO L87 Difference]: Start difference. First operand 2871 states and 3922 transitions. Second operand 24 states. [2020-10-29 03:48:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:49,375 INFO L93 Difference]: Finished difference Result 5957 states and 8187 transitions. [2020-10-29 03:48:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:48:49,376 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 257 [2020-10-29 03:48:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:49,382 INFO L225 Difference]: With dead ends: 5957 [2020-10-29 03:48:49,382 INFO L226 Difference]: Without dead ends: 3133 [2020-10-29 03:48:49,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:48:49,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-29 03:48:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 2981. [2020-10-29 03:48:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2981 states. [2020-10-29 03:48:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4072 transitions. [2020-10-29 03:48:49,496 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4072 transitions. Word has length 257 [2020-10-29 03:48:49,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:49,496 INFO L481 AbstractCegarLoop]: Abstraction has 2981 states and 4072 transitions. [2020-10-29 03:48:49,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:48:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4072 transitions. [2020-10-29 03:48:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-29 03:48:49,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:49,506 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 17, 17, 17, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:49,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:48:49,506 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:49,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:49,507 INFO L82 PathProgramCache]: Analyzing trace with hash -62717645, now seen corresponding path program 23 times [2020-10-29 03:48:49,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:49,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196815937] [2020-10-29 03:48:49,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:49,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:49,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:54,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 03:48:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:48:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:55,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:48:55,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:48:55,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:48:55,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:48:55,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:48:55,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:48:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:48:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:48:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:48:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:48:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 1932 trivial. 0 not checked. [2020-10-29 03:48:55,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196815937] [2020-10-29 03:48:55,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:48:55,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:48:55,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687723150] [2020-10-29 03:48:55,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:48:55,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:48:55,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:48:55,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:48:55,117 INFO L87 Difference]: Start difference. First operand 2981 states and 4072 transitions. Second operand 25 states. [2020-10-29 03:48:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:48:55,831 INFO L93 Difference]: Finished difference Result 6175 states and 8485 transitions. [2020-10-29 03:48:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:48:55,832 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 269 [2020-10-29 03:48:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:48:55,839 INFO L225 Difference]: With dead ends: 6175 [2020-10-29 03:48:55,839 INFO L226 Difference]: Without dead ends: 3243 [2020-10-29 03:48:55,844 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 [2020-10-29 03:48:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2020-10-29 03:48:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 3091. [2020-10-29 03:48:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3091 states. [2020-10-29 03:48:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 4222 transitions. [2020-10-29 03:48:55,959 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 4222 transitions. Word has length 269 [2020-10-29 03:48:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:48:55,959 INFO L481 AbstractCegarLoop]: Abstraction has 3091 states and 4222 transitions. [2020-10-29 03:48:55,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:48:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 4222 transitions. [2020-10-29 03:48:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-29 03:48:55,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:48:55,971 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 18, 18, 18, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:48:55,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:48:55,971 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:48:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:48:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash -100750256, now seen corresponding path program 24 times [2020-10-29 03:48:55,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:48:55,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314061314] [2020-10-29 03:48:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:48:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:48:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:56,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:48:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:49:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:01,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 2123 trivial. 0 not checked. [2020-10-29 03:49:01,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314061314] [2020-10-29 03:49:01,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:01,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:49:01,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952691242] [2020-10-29 03:49:01,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:49:01,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:01,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:49:01,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:49:01,620 INFO L87 Difference]: Start difference. First operand 3091 states and 4222 transitions. Second operand 26 states. [2020-10-29 03:49:02,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:02,351 INFO L93 Difference]: Finished difference Result 6393 states and 8783 transitions. [2020-10-29 03:49:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:49:02,353 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 281 [2020-10-29 03:49:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:02,361 INFO L225 Difference]: With dead ends: 6393 [2020-10-29 03:49:02,361 INFO L226 Difference]: Without dead ends: 3353 [2020-10-29 03:49:02,367 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 [2020-10-29 03:49:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2020-10-29 03:49:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3201. [2020-10-29 03:49:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2020-10-29 03:49:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4372 transitions. [2020-10-29 03:49:02,497 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4372 transitions. Word has length 281 [2020-10-29 03:49:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:02,498 INFO L481 AbstractCegarLoop]: Abstraction has 3201 states and 4372 transitions. [2020-10-29 03:49:02,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:49:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4372 transitions. [2020-10-29 03:49:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 03:49:02,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:02,510 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 19, 19, 19, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:02,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:49:02,511 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash -59375345, now seen corresponding path program 25 times [2020-10-29 03:49:02,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:02,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692242092] [2020-10-29 03:49:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:07,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:07,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-29 03:49:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:49:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 03:49:07,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:07,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:49:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:49:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 03:49:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:49:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 2323 trivial. 0 not checked. [2020-10-29 03:49:08,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692242092] [2020-10-29 03:49:08,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:08,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:49:08,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975979791] [2020-10-29 03:49:08,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:49:08,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:08,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:49:08,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:49:08,274 INFO L87 Difference]: Start difference. First operand 3201 states and 4372 transitions. Second operand 27 states. [2020-10-29 03:49:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:09,022 INFO L93 Difference]: Finished difference Result 6611 states and 9081 transitions. [2020-10-29 03:49:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:49:09,022 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 293 [2020-10-29 03:49:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:09,033 INFO L225 Difference]: With dead ends: 6611 [2020-10-29 03:49:09,034 INFO L226 Difference]: Without dead ends: 3463 [2020-10-29 03:49:09,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:49:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2020-10-29 03:49:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3311. [2020-10-29 03:49:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2020-10-29 03:49:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4522 transitions. [2020-10-29 03:49:09,172 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4522 transitions. Word has length 293 [2020-10-29 03:49:09,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:09,173 INFO L481 AbstractCegarLoop]: Abstraction has 3311 states and 4522 transitions. [2020-10-29 03:49:09,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:49:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4522 transitions. [2020-10-29 03:49:09,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 03:49:09,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:09,186 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 20, 20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:09,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:49:09,186 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:09,186 INFO L82 PathProgramCache]: Analyzing trace with hash -557994772, now seen corresponding path program 26 times [2020-10-29 03:49:09,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:09,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876755028] [2020-10-29 03:49:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:09,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:49:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:14,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:14,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:14,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:14,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:14,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 2532 trivial. 0 not checked. [2020-10-29 03:49:14,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876755028] [2020-10-29 03:49:14,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:14,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:49:14,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782841586] [2020-10-29 03:49:14,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:49:14,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:14,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:49:14,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:49:14,972 INFO L87 Difference]: Start difference. First operand 3311 states and 4522 transitions. Second operand 28 states. [2020-10-29 03:49:15,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:15,813 INFO L93 Difference]: Finished difference Result 6829 states and 9379 transitions. [2020-10-29 03:49:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:49:15,814 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 305 [2020-10-29 03:49:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:15,821 INFO L225 Difference]: With dead ends: 6829 [2020-10-29 03:49:15,822 INFO L226 Difference]: Without dead ends: 3573 [2020-10-29 03:49:15,828 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 [2020-10-29 03:49:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2020-10-29 03:49:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3421. [2020-10-29 03:49:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3421 states. [2020-10-29 03:49:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4672 transitions. [2020-10-29 03:49:15,950 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4672 transitions. Word has length 305 [2020-10-29 03:49:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:15,951 INFO L481 AbstractCegarLoop]: Abstraction has 3421 states and 4672 transitions. [2020-10-29 03:49:15,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:49:15,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4672 transitions. [2020-10-29 03:49:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 03:49:15,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:15,963 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 21, 21, 21, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:15,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:49:15,963 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:15,964 INFO L82 PathProgramCache]: Analyzing trace with hash -72392981, now seen corresponding path program 27 times [2020-10-29 03:49:15,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:15,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708776018] [2020-10-29 03:49:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:16,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 03:49:21,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 03:49:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:21,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:21,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:21,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:21,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:21,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:21,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 2750 trivial. 0 not checked. [2020-10-29 03:49:21,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708776018] [2020-10-29 03:49:21,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:21,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:49:21,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182757637] [2020-10-29 03:49:21,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:49:21,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:21,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:49:21,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:49:21,785 INFO L87 Difference]: Start difference. First operand 3421 states and 4672 transitions. Second operand 29 states. [2020-10-29 03:49:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:22,657 INFO L93 Difference]: Finished difference Result 7047 states and 9677 transitions. [2020-10-29 03:49:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:49:22,658 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 317 [2020-10-29 03:49:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:22,665 INFO L225 Difference]: With dead ends: 7047 [2020-10-29 03:49:22,666 INFO L226 Difference]: Without dead ends: 3683 [2020-10-29 03:49:22,672 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 [2020-10-29 03:49:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2020-10-29 03:49:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3531. [2020-10-29 03:49:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3531 states. [2020-10-29 03:49:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 4822 transitions. [2020-10-29 03:49:22,799 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 4822 transitions. Word has length 317 [2020-10-29 03:49:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:22,799 INFO L481 AbstractCegarLoop]: Abstraction has 3531 states and 4822 transitions. [2020-10-29 03:49:22,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:49:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 4822 transitions. [2020-10-29 03:49:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-29 03:49:22,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:22,808 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 22, 22, 22, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:22,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:49:22,808 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:22,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2105771128, now seen corresponding path program 28 times [2020-10-29 03:49:22,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:22,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385833754] [2020-10-29 03:49:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:28,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:28,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-29 03:49:28,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:49:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5848 [2020-10-29 03:49:28,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:28,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:49:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 03:49:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:49:28,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:29,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:49:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:49:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:49:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:49:29,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:49:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3978 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 2977 trivial. 0 not checked. [2020-10-29 03:49:29,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385833754] [2020-10-29 03:49:29,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:49:29,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:49:29,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595802584] [2020-10-29 03:49:29,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:49:29,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:49:29,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:49:29,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:49:29,402 INFO L87 Difference]: Start difference. First operand 3531 states and 4822 transitions. Second operand 30 states. [2020-10-29 03:49:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:49:30,355 INFO L93 Difference]: Finished difference Result 7265 states and 9975 transitions. [2020-10-29 03:49:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:49:30,356 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 329 [2020-10-29 03:49:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:49:30,362 INFO L225 Difference]: With dead ends: 7265 [2020-10-29 03:49:30,362 INFO L226 Difference]: Without dead ends: 3793 [2020-10-29 03:49:30,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:49:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2020-10-29 03:49:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3641. [2020-10-29 03:49:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3641 states. [2020-10-29 03:49:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 4972 transitions. [2020-10-29 03:49:30,507 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 4972 transitions. Word has length 329 [2020-10-29 03:49:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:49:30,507 INFO L481 AbstractCegarLoop]: Abstraction has 3641 states and 4972 transitions. [2020-10-29 03:49:30,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:49:30,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 4972 transitions. [2020-10-29 03:49:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-29 03:49:30,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:49:30,516 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 27, 27, 23, 23, 23, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:49:30,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:49:30,516 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:49:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:49:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash -480896313, now seen corresponding path program 29 times [2020-10-29 03:49:30,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:49:30,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415315668] [2020-10-29 03:49:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:49:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:49:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:49:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking...