/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:09:37,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:09:37,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:09:37,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:09:37,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:09:37,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:09:37,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:09:37,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:09:37,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:09:37,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:09:37,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:09:37,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:09:37,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:09:37,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:09:37,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:09:37,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:09:37,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:09:37,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:09:37,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:09:37,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:09:37,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:09:37,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:09:37,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:09:37,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:09:37,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:09:37,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:09:37,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:09:37,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:09:37,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:09:37,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:09:37,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:09:37,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:09:37,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:09:37,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:09:37,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:09:37,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:09:37,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:09:37,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:09:37,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:09:37,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:09:37,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:09:37,294 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 [2020-10-28 12:09:37,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:09:37,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:09:37,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:09:37,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:09:37,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:09:37,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:09:37,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:09:37,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:09:37,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:09:37,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:09:37,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:09:37,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:09:37,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:09:37,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:09:37,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:09:37,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:09:37,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:09:37,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:09:37,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:09:37,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:09:37,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:09:37,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:09:37,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:09:37,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:09:37,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:09:37,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:09:37,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:09:37,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:09:37,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:09:37,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:09:37,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:09:37,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:09:37,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:09:37,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:09:37,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:09:37,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2020-10-28 12:09:37,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/779ce86b9/4f5ec4e2e49048b18d082fa77483757a/FLAG0b11d85c4 [2020-10-28 12:09:38,749 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:09:38,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label47.c [2020-10-28 12:09:38,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/779ce86b9/4f5ec4e2e49048b18d082fa77483757a/FLAG0b11d85c4 [2020-10-28 12:09:38,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/779ce86b9/4f5ec4e2e49048b18d082fa77483757a [2020-10-28 12:09:38,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:09:38,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:09:38,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:09:38,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:09:38,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:09:38,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:09:38" (1/1) ... [2020-10-28 12:09:38,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36988f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:38, skipping insertion in model container [2020-10-28 12:09:38,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:09:38" (1/1) ... [2020-10-28 12:09:38,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:09:39,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:09:39,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:09:39,841 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:09:40,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:09:40,088 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:09:40,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40 WrapperNode [2020-10-28 12:09:40,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:09:40,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:09:40,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:09:40,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:09:40,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (1/1) ... [2020-10-28 12:09:40,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (1/1) ... [2020-10-28 12:09:40,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (1/1) ... [2020-10-28 12:09:40,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (1/1) ... [2020-10-28 12:09:40,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (1/1) ... [2020-10-28 12:09:40,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (1/1) ... [2020-10-28 12:09:40,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (1/1) ... [2020-10-28 12:09:40,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:09:40,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:09:40,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:09:40,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:09:40,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (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 [2020-10-28 12:09:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:09:40,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:09:40,377 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:09:40,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:09:40,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:09:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:09:40,377 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:09:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:09:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:09:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:09:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:09:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:09:40,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:09:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:09:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:09:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:09:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:09:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:09:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:09:42,309 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:09:42,309 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:09:42,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:09:42 BoogieIcfgContainer [2020-10-28 12:09:42,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:09:42,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:09:42,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:09:42,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:09:42,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:09:38" (1/3) ... [2020-10-28 12:09:42,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f24fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:09:42, skipping insertion in model container [2020-10-28 12:09:42,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:40" (2/3) ... [2020-10-28 12:09:42,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f24fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:09:42, skipping insertion in model container [2020-10-28 12:09:42,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:09:42" (3/3) ... [2020-10-28 12:09:42,322 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label47.c [2020-10-28 12:09:42,337 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:09:42,343 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:09:42,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:09:42,391 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:09:42,391 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:09:42,391 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:09:42,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:09:42,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:09:42,392 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:09:42,392 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:09:42,392 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:09:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:09:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 12:09:42,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:42,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:42,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash 166506440, now seen corresponding path program 1 times [2020-10-28 12:09:42,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:42,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786418590] [2020-10-28 12:09:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 12:09:43,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-28 12:09:43,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:09:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 12:09:43,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 12:09:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:43,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:43,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:43,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:09:43,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:43,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:09:43,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:09:43,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786418590] [2020-10-28 12:09:43,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:09:43,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:09:43,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595552195] [2020-10-28 12:09:43,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:09:43,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:43,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:09:43,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:09:43,740 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:09:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:46,866 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-28 12:09:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:09:46,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-28 12:09:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:46,886 INFO L225 Difference]: With dead ends: 793 [2020-10-28 12:09:46,886 INFO L226 Difference]: Without dead ends: 432 [2020-10-28 12:09:46,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:09:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-28 12:09:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-28 12:09:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-28 12:09:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-28 12:09:46,991 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 42 [2020-10-28 12:09:46,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:46,991 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-28 12:09:46,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:09:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-28 12:09:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 12:09:46,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:46,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:46,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:09:46,998 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:46,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2056477508, now seen corresponding path program 1 times [2020-10-28 12:09:47,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:47,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952840991] [2020-10-28 12:09:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:48,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 12:09:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:09:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1987 [2020-10-28 12:09:49,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:09:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:09:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:09:49,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:49,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:49,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:09:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:09:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:49,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:49,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:09:49,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:09:49,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:49,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:49,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:09:49,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:09:49,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952840991] [2020-10-28 12:09:49,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:09:49,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:09:49,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153328257] [2020-10-28 12:09:49,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:49,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:49,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:49,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:49,580 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-28 12:09:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:53,375 INFO L93 Difference]: Finished difference Result 1277 states and 1862 transitions. [2020-10-28 12:09:53,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:09:53,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 12:09:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:53,385 INFO L225 Difference]: With dead ends: 1277 [2020-10-28 12:09:53,386 INFO L226 Difference]: Without dead ends: 857 [2020-10-28 12:09:53,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:09:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2020-10-28 12:09:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 821. [2020-10-28 12:09:53,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-10-28 12:09:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1098 transitions. [2020-10-28 12:09:53,497 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1098 transitions. Word has length 114 [2020-10-28 12:09:53,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:53,501 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1098 transitions. [2020-10-28 12:09:53,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1098 transitions. [2020-10-28 12:09:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 12:09:53,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:53,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:53,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:09:53,506 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:53,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:53,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1200421172, now seen corresponding path program 1 times [2020-10-28 12:09:53,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:53,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954098786] [2020-10-28 12:09:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:55,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:55,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:55,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:09:55,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:09:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1809 [2020-10-28 12:09:55,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:55,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:09:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:09:55,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:09:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:55,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:55,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:55,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:55,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:55,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:55,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:09:55,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:55,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:09:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:55,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:55,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:09:55,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:55,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:09:55,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:55,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:09:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:09:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:09:55,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954098786] [2020-10-28 12:09:55,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:09:55,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:09:55,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929185734] [2020-10-28 12:09:55,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:09:55,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:09:55,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:09:55,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:09:55,881 INFO L87 Difference]: Start difference. First operand 821 states and 1098 transitions. Second operand 7 states. [2020-10-28 12:09:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:09:59,092 INFO L93 Difference]: Finished difference Result 2067 states and 2725 transitions. [2020-10-28 12:09:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:09:59,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 12:09:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:09:59,101 INFO L225 Difference]: With dead ends: 2067 [2020-10-28 12:09:59,101 INFO L226 Difference]: Without dead ends: 1252 [2020-10-28 12:09:59,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:09:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2020-10-28 12:09:59,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1215. [2020-10-28 12:09:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-28 12:09:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1531 transitions. [2020-10-28 12:09:59,153 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1531 transitions. Word has length 122 [2020-10-28 12:09:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:09:59,154 INFO L481 AbstractCegarLoop]: Abstraction has 1215 states and 1531 transitions. [2020-10-28 12:09:59,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:09:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1531 transitions. [2020-10-28 12:09:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 12:09:59,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:09:59,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:09:59,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:09:59,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:09:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:09:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash -505272133, now seen corresponding path program 1 times [2020-10-28 12:09:59,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:09:59,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077897397] [2020-10-28 12:09:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:09:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:59,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 12:09:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-28 12:09:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:59,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:09:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:09:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 12:09:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:09:59,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:09:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:59,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:59,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:59,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:09:59,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:09:59,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:59,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:09:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:09:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:09:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:09:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:09:59,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:09:59,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:09:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:09:59,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:09:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 12:09:59,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:09:59,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:09:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:09:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:09:59,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:09:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:10:00,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077897397] [2020-10-28 12:10:00,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:00,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:10:00,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300352784] [2020-10-28 12:10:00,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:10:00,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:00,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:10:00,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:10:00,108 INFO L87 Difference]: Start difference. First operand 1215 states and 1531 transitions. Second operand 5 states. [2020-10-28 12:10:03,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:03,046 INFO L93 Difference]: Finished difference Result 2073 states and 2816 transitions. [2020-10-28 12:10:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:10:03,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 12:10:03,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:03,061 INFO L225 Difference]: With dead ends: 2073 [2020-10-28 12:10:03,062 INFO L226 Difference]: Without dead ends: 1638 [2020-10-28 12:10:03,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:10:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-10-28 12:10:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1629. [2020-10-28 12:10:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-10-28 12:10:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 2091 transitions. [2020-10-28 12:10:03,149 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 2091 transitions. Word has length 173 [2020-10-28 12:10:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:03,152 INFO L481 AbstractCegarLoop]: Abstraction has 1629 states and 2091 transitions. [2020-10-28 12:10:03,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:10:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 2091 transitions. [2020-10-28 12:10:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 12:10:03,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:03,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:03,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:10:03,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:03,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:03,165 INFO L82 PathProgramCache]: Analyzing trace with hash -544229670, now seen corresponding path program 1 times [2020-10-28 12:10:03,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:03,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533819653] [2020-10-28 12:10:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:03,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:03,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:04,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:04,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:04,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 12:10:04,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:04,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1349 [2020-10-28 12:10:04,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:10:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:10:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:04,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:04,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:04,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:04,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:10:04,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:04,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:04,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:04,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:04,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:10:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:04,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:10:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:05,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:10:05,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:10:05,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:05,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:10:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:10:05,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533819653] [2020-10-28 12:10:05,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:05,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:10:05,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579619924] [2020-10-28 12:10:05,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:10:05,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:05,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:10:05,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:10:05,359 INFO L87 Difference]: Start difference. First operand 1629 states and 2091 transitions. Second operand 8 states. [2020-10-28 12:10:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:08,488 INFO L93 Difference]: Finished difference Result 3479 states and 4694 transitions. [2020-10-28 12:10:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:10:08,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-28 12:10:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:08,503 INFO L225 Difference]: With dead ends: 3479 [2020-10-28 12:10:08,504 INFO L226 Difference]: Without dead ends: 2234 [2020-10-28 12:10:08,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:10:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-28 12:10:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2217. [2020-10-28 12:10:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-28 12:10:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2962 transitions. [2020-10-28 12:10:08,582 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2962 transitions. Word has length 230 [2020-10-28 12:10:08,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:08,582 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 2962 transitions. [2020-10-28 12:10:08,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:10:08,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2962 transitions. [2020-10-28 12:10:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-28 12:10:08,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:08,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:08,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:10:08,587 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:08,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2033232818, now seen corresponding path program 1 times [2020-10-28 12:10:08,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:08,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276594689] [2020-10-28 12:10:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:08,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:11,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:11,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-28 12:10:11,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:11,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2532 [2020-10-28 12:10:11,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:11,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:10:11,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:10:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:11,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:11,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:11,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:10:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:11,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:11,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:11,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:11,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:10:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:11,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:10:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:11,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:10:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:10:11,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:11,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:10:11,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:10:12,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276594689] [2020-10-28 12:10:12,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:12,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:12,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028964748] [2020-10-28 12:10:12,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:12,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:12,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:12,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:12,015 INFO L87 Difference]: Start difference. First operand 2217 states and 2962 transitions. Second operand 7 states. [2020-10-28 12:10:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:18,287 INFO L93 Difference]: Finished difference Result 4681 states and 6479 transitions. [2020-10-28 12:10:18,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:10:18,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-10-28 12:10:18,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:18,303 INFO L225 Difference]: With dead ends: 4681 [2020-10-28 12:10:18,304 INFO L226 Difference]: Without dead ends: 2848 [2020-10-28 12:10:18,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:10:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2020-10-28 12:10:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 2817. [2020-10-28 12:10:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2817 states. [2020-10-28 12:10:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 3702 transitions. [2020-10-28 12:10:18,409 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 3702 transitions. Word has length 231 [2020-10-28 12:10:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:18,410 INFO L481 AbstractCegarLoop]: Abstraction has 2817 states and 3702 transitions. [2020-10-28 12:10:18,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 3702 transitions. [2020-10-28 12:10:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-28 12:10:18,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:18,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:18,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:10:18,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:18,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:18,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1131071390, now seen corresponding path program 1 times [2020-10-28 12:10:18,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:18,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599908027] [2020-10-28 12:10:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:18,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:22,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:22,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 12:10:22,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:10:22,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3516 [2020-10-28 12:10:22,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:22,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:22,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:10:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:10:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:22,221 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:10:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:22,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:22,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:22,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:22,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:10:22,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:22,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:22,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:22,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:22,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:22,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:10:22,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:10:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:22,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:10:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:10:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:22,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:10:22,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:10:22,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:22,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:22,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:10:22,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:22,938 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:10:22,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599908027] [2020-10-28 12:10:22,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:22,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:22,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637149657] [2020-10-28 12:10:22,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:22,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:22,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:22,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:22,942 INFO L87 Difference]: Start difference. First operand 2817 states and 3702 transitions. Second operand 7 states. [2020-10-28 12:10:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:27,117 INFO L93 Difference]: Finished difference Result 6681 states and 9153 transitions. [2020-10-28 12:10:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:10:27,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-28 12:10:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:27,150 INFO L225 Difference]: With dead ends: 6681 [2020-10-28 12:10:27,150 INFO L226 Difference]: Without dead ends: 4248 [2020-10-28 12:10:27,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:10:27,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2020-10-28 12:10:27,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 4196. [2020-10-28 12:10:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4196 states. [2020-10-28 12:10:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 5426 transitions. [2020-10-28 12:10:27,315 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 5426 transitions. Word has length 241 [2020-10-28 12:10:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:27,316 INFO L481 AbstractCegarLoop]: Abstraction has 4196 states and 5426 transitions. [2020-10-28 12:10:27,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 5426 transitions. [2020-10-28 12:10:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-28 12:10:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:27,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:27,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:10:27,323 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash 225252034, now seen corresponding path program 1 times [2020-10-28 12:10:27,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:27,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161374663] [2020-10-28 12:10:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:27,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:28,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:28,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-28 12:10:28,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-28 12:10:28,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:28,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:10:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 12:10:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:28,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:28,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:28,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:28,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:10:28,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:28,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:28,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 12:10:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:28,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:28,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:28,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:28,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:10:28,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:10:28,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:28,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:10:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:10:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:10:28,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161374663] [2020-10-28 12:10:28,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:28,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:10:28,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295768537] [2020-10-28 12:10:28,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:10:28,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:10:28,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:10:28,559 INFO L87 Difference]: Start difference. First operand 4196 states and 5426 transitions. Second operand 6 states. [2020-10-28 12:10:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:33,533 INFO L93 Difference]: Finished difference Result 7661 states and 10265 transitions. [2020-10-28 12:10:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:10:33,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-10-28 12:10:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:33,564 INFO L225 Difference]: With dead ends: 7661 [2020-10-28 12:10:33,564 INFO L226 Difference]: Without dead ends: 5209 [2020-10-28 12:10:33,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:10:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2020-10-28 12:10:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 5156. [2020-10-28 12:10:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5156 states. [2020-10-28 12:10:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 6798 transitions. [2020-10-28 12:10:33,822 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 6798 transitions. Word has length 242 [2020-10-28 12:10:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:33,823 INFO L481 AbstractCegarLoop]: Abstraction has 5156 states and 6798 transitions. [2020-10-28 12:10:33,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:10:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 6798 transitions. [2020-10-28 12:10:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-28 12:10:33,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:33,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:33,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:10:33,834 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:33,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:33,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1156130000, now seen corresponding path program 1 times [2020-10-28 12:10:33,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:33,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634774292] [2020-10-28 12:10:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:36,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-28 12:10:36,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2129 [2020-10-28 12:10:36,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:36,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:10:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:10:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:36,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:36,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:36,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:36,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:10:36,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:36,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:36,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:36,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:36,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:36,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:36,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:10:36,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:10:36,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:36,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:10:36,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:10:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:36,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:36,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:10:36,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:36,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 12:10:36,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:36,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:10:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:10:36,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634774292] [2020-10-28 12:10:36,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:36,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:36,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424457411] [2020-10-28 12:10:36,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:36,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:36,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:36,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:36,990 INFO L87 Difference]: Start difference. First operand 5156 states and 6798 transitions. Second operand 7 states. [2020-10-28 12:10:41,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:41,449 INFO L93 Difference]: Finished difference Result 10944 states and 14900 transitions. [2020-10-28 12:10:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:10:41,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-28 12:10:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:41,490 INFO L225 Difference]: With dead ends: 10944 [2020-10-28 12:10:41,490 INFO L226 Difference]: Without dead ends: 6172 [2020-10-28 12:10:41,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:10:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2020-10-28 12:10:41,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 6148. [2020-10-28 12:10:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6148 states. [2020-10-28 12:10:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 8088 transitions. [2020-10-28 12:10:41,745 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 8088 transitions. Word has length 277 [2020-10-28 12:10:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:41,745 INFO L481 AbstractCegarLoop]: Abstraction has 6148 states and 8088 transitions. [2020-10-28 12:10:41,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 8088 transitions. [2020-10-28 12:10:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 12:10:41,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:41,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:41,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:10:41,760 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1539655978, now seen corresponding path program 1 times [2020-10-28 12:10:41,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:41,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162193869] [2020-10-28 12:10:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:41,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:42,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:46,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:46,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:46,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-28 12:10:46,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:10:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 12:10:46,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:46,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:10:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:10:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:10:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:47,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:10:47,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:47,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:10:47,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:10:47,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:47,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:10:47,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:10:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:10:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:47,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:47,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:10:47,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:47,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 12:10:47,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:47,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:47,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:10:47,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 262 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 12:10:47,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162193869] [2020-10-28 12:10:47,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:47,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:47,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371341708] [2020-10-28 12:10:47,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:47,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:47,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:47,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:47,687 INFO L87 Difference]: Start difference. First operand 6148 states and 8088 transitions. Second operand 7 states. [2020-10-28 12:10:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:50,969 INFO L93 Difference]: Finished difference Result 11882 states and 15744 transitions. [2020-10-28 12:10:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:10:50,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-28 12:10:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:51,006 INFO L225 Difference]: With dead ends: 11882 [2020-10-28 12:10:51,007 INFO L226 Difference]: Without dead ends: 6118 [2020-10-28 12:10:51,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:10:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2020-10-28 12:10:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 6095. [2020-10-28 12:10:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6095 states. [2020-10-28 12:10:51,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6095 states to 6095 states and 7583 transitions. [2020-10-28 12:10:51,186 INFO L78 Accepts]: Start accepts. Automaton has 6095 states and 7583 transitions. Word has length 325 [2020-10-28 12:10:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:51,187 INFO L481 AbstractCegarLoop]: Abstraction has 6095 states and 7583 transitions. [2020-10-28 12:10:51,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6095 states and 7583 transitions. [2020-10-28 12:10:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-28 12:10:51,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:51,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:51,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:10:51,200 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:51,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1636205006, now seen corresponding path program 1 times [2020-10-28 12:10:51,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:51,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748189299] [2020-10-28 12:10:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:51,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:54,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-28 12:10:54,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:10:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2943 [2020-10-28 12:10:54,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:54,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:10:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:10:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:10:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:54,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:10:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:54,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:54,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:10:54,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:10:54,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:54,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:54,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:54,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:10:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:54,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:54,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:10:54,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:54,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:10:54,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:54,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:10:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:54,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:10:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:10:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:54,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:54,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:54,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:10:54,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:10:54,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 12:10:54,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:54,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:10:54,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:10:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:10:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:54,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:10:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:10:54,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:10:54,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:10:54,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:10:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:10:54,911 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 235 proven. 35 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-28 12:10:54,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748189299] [2020-10-28 12:10:54,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:10:54,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:10:54,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941289611] [2020-10-28 12:10:54,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:10:54,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:10:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:10:54,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:10:54,915 INFO L87 Difference]: Start difference. First operand 6095 states and 7583 transitions. Second operand 7 states. [2020-10-28 12:10:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:10:59,661 INFO L93 Difference]: Finished difference Result 12635 states and 15868 transitions. [2020-10-28 12:10:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:10:59,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-28 12:10:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:10:59,687 INFO L225 Difference]: With dead ends: 12635 [2020-10-28 12:10:59,687 INFO L226 Difference]: Without dead ends: 6924 [2020-10-28 12:10:59,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:10:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2020-10-28 12:10:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 6503. [2020-10-28 12:10:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6503 states. [2020-10-28 12:10:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 8072 transitions. [2020-10-28 12:10:59,878 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 8072 transitions. Word has length 329 [2020-10-28 12:10:59,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:10:59,879 INFO L481 AbstractCegarLoop]: Abstraction has 6503 states and 8072 transitions. [2020-10-28 12:10:59,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:10:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 8072 transitions. [2020-10-28 12:10:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-28 12:10:59,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:10:59,893 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:10:59,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:10:59,893 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:10:59,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:10:59,894 INFO L82 PathProgramCache]: Analyzing trace with hash 907558039, now seen corresponding path program 1 times [2020-10-28 12:10:59,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:10:59,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013940748] [2020-10-28 12:10:59,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:10:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:00,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:05,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:05,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-28 12:11:05,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:11:05,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 12:11:05,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:05,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:11:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:11:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:05,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:05,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:05,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:05,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:11:05,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:05,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:05,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:05,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:11:05,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:05,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:05,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:05,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:05,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:11:05,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 12:11:05,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:05,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:11:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:05,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:11:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:05,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:05,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:11:05,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:11:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:05,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:11:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 220 proven. 35 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 12:11:05,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013940748] [2020-10-28 12:11:05,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:05,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:05,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169354954] [2020-10-28 12:11:05,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:05,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:05,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:05,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:05,690 INFO L87 Difference]: Start difference. First operand 6503 states and 8072 transitions. Second operand 7 states. [2020-10-28 12:11:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:11,037 INFO L93 Difference]: Finished difference Result 13412 states and 16805 transitions. [2020-10-28 12:11:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:11,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-28 12:11:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:11,073 INFO L225 Difference]: With dead ends: 13412 [2020-10-28 12:11:11,073 INFO L226 Difference]: Without dead ends: 8459 [2020-10-28 12:11:11,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8459 states. [2020-10-28 12:11:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8459 to 8249. [2020-10-28 12:11:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8249 states. [2020-10-28 12:11:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8249 states to 8249 states and 10202 transitions. [2020-10-28 12:11:11,294 INFO L78 Accepts]: Start accepts. Automaton has 8249 states and 10202 transitions. Word has length 329 [2020-10-28 12:11:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:11,295 INFO L481 AbstractCegarLoop]: Abstraction has 8249 states and 10202 transitions. [2020-10-28 12:11:11,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8249 states and 10202 transitions. [2020-10-28 12:11:11,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-28 12:11:11,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:11,312 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:11,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:11:11,313 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:11,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:11,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1588750817, now seen corresponding path program 1 times [2020-10-28 12:11:11,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:11,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096892872] [2020-10-28 12:11:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-28 12:11:16,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:11:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 12:11:16,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-28 12:11:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:11:16,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:16,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:11:16,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:16,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:16,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:16,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:11:16,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:16,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:16,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:16,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:11:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:16,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-28 12:11:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:16,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:16,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:11:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 224 proven. 35 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-28 12:11:17,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096892872] [2020-10-28 12:11:17,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:17,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:17,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918981888] [2020-10-28 12:11:17,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:17,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:17,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:17,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:17,031 INFO L87 Difference]: Start difference. First operand 8249 states and 10202 transitions. Second operand 7 states. [2020-10-28 12:11:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:22,562 INFO L93 Difference]: Finished difference Result 15172 states and 19044 transitions. [2020-10-28 12:11:22,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:11:22,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-28 12:11:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:22,594 INFO L225 Difference]: With dead ends: 15172 [2020-10-28 12:11:22,594 INFO L226 Difference]: Without dead ends: 9055 [2020-10-28 12:11:22,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:11:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9055 states. [2020-10-28 12:11:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9055 to 9028. [2020-10-28 12:11:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9028 states. [2020-10-28 12:11:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 11259 transitions. [2020-10-28 12:11:22,828 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 11259 transitions. Word has length 333 [2020-10-28 12:11:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:22,829 INFO L481 AbstractCegarLoop]: Abstraction has 9028 states and 11259 transitions. [2020-10-28 12:11:22,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 11259 transitions. [2020-10-28 12:11:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-28 12:11:22,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:22,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:22,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:11:22,843 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:22,844 INFO L82 PathProgramCache]: Analyzing trace with hash 717352317, now seen corresponding path program 1 times [2020-10-28 12:11:22,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:22,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640560435] [2020-10-28 12:11:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:27,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:27,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-28 12:11:27,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:11:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 12:11:27,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:27,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:11:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-28 12:11:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:11:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:28,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:28,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:28,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:28,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:28,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:11:28,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:28,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:28,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:28,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:28,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:28,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:28,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:28,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 12:11:28,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-28 12:11:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:28,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:28,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 12:11:28,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:11:28,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:28,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:28,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:11:28,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 108 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-28 12:11:28,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640560435] [2020-10-28 12:11:28,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:28,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:11:28,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939656305] [2020-10-28 12:11:28,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:11:28,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:28,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:11:28,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:11:28,471 INFO L87 Difference]: Start difference. First operand 9028 states and 11259 transitions. Second operand 5 states. [2020-10-28 12:11:32,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:32,025 INFO L93 Difference]: Finished difference Result 20347 states and 25725 transitions. [2020-10-28 12:11:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:11:32,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-28 12:11:32,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:32,069 INFO L225 Difference]: With dead ends: 20347 [2020-10-28 12:11:32,070 INFO L226 Difference]: Without dead ends: 11703 [2020-10-28 12:11:32,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:11:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2020-10-28 12:11:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11319. [2020-10-28 12:11:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11319 states. [2020-10-28 12:11:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11319 states to 11319 states and 13843 transitions. [2020-10-28 12:11:32,376 INFO L78 Accepts]: Start accepts. Automaton has 11319 states and 13843 transitions. Word has length 334 [2020-10-28 12:11:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:32,377 INFO L481 AbstractCegarLoop]: Abstraction has 11319 states and 13843 transitions. [2020-10-28 12:11:32,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:11:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11319 states and 13843 transitions. [2020-10-28 12:11:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-28 12:11:32,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:32,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:32,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:11:32,395 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:32,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1574188810, now seen corresponding path program 1 times [2020-10-28 12:11:32,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:32,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578042574] [2020-10-28 12:11:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:33,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-28 12:11:33,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:11:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-28 12:11:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:33,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:11:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:11:33,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-28 12:11:33,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:33,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:33,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:11:33,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:33,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:33,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:33,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:33,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:33,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:11:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:33,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:11:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:34,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 12:11:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 180 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:11:34,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578042574] [2020-10-28 12:11:34,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:34,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:11:34,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848716245] [2020-10-28 12:11:34,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:11:34,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:34,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:11:34,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:11:34,543 INFO L87 Difference]: Start difference. First operand 11319 states and 13843 transitions. Second operand 8 states. [2020-10-28 12:11:40,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:40,225 INFO L93 Difference]: Finished difference Result 23581 states and 29252 transitions. [2020-10-28 12:11:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:11:40,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 355 [2020-10-28 12:11:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:40,271 INFO L225 Difference]: With dead ends: 23581 [2020-10-28 12:11:40,272 INFO L226 Difference]: Without dead ends: 15348 [2020-10-28 12:11:40,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:11:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15348 states. [2020-10-28 12:11:40,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15348 to 14759. [2020-10-28 12:11:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14759 states. [2020-10-28 12:11:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14759 states to 14759 states and 17504 transitions. [2020-10-28 12:11:40,741 INFO L78 Accepts]: Start accepts. Automaton has 14759 states and 17504 transitions. Word has length 355 [2020-10-28 12:11:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:40,742 INFO L481 AbstractCegarLoop]: Abstraction has 14759 states and 17504 transitions. [2020-10-28 12:11:40,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:11:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 14759 states and 17504 transitions. [2020-10-28 12:11:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-28 12:11:40,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:40,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:40,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:11:40,774 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:40,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1346301933, now seen corresponding path program 1 times [2020-10-28 12:11:40,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:40,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165555694] [2020-10-28 12:11:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:43,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-28 12:11:45,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:45,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4615 [2020-10-28 12:11:45,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:11:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 12:11:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:45,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:45,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:11:45,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:45,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:45,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:11:45,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 12:11:45,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:45,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:11:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:11:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:45,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:11:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-28 12:11:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:46,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:46,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:46,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:11:46,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:11:46,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:46,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:11:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 212 proven. 108 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-28 12:11:46,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165555694] [2020-10-28 12:11:46,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:46,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:11:46,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965243278] [2020-10-28 12:11:46,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:11:46,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:46,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:11:46,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:11:46,564 INFO L87 Difference]: Start difference. First operand 14759 states and 17504 transitions. Second operand 7 states. [2020-10-28 12:11:47,471 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 12:11:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:11:50,203 INFO L93 Difference]: Finished difference Result 27815 states and 33278 transitions. [2020-10-28 12:11:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:11:50,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-28 12:11:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:11:50,255 INFO L225 Difference]: With dead ends: 27815 [2020-10-28 12:11:50,255 INFO L226 Difference]: Without dead ends: 16144 [2020-10-28 12:11:50,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:11:50,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16144 states. [2020-10-28 12:11:50,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16144 to 15353. [2020-10-28 12:11:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15353 states. [2020-10-28 12:11:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15353 states to 15353 states and 18128 transitions. [2020-10-28 12:11:50,776 INFO L78 Accepts]: Start accepts. Automaton has 15353 states and 18128 transitions. Word has length 448 [2020-10-28 12:11:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:11:50,777 INFO L481 AbstractCegarLoop]: Abstraction has 15353 states and 18128 transitions. [2020-10-28 12:11:50,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:11:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15353 states and 18128 transitions. [2020-10-28 12:11:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-28 12:11:50,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:11:50,811 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:11:50,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:11:50,812 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:11:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:11:50,812 INFO L82 PathProgramCache]: Analyzing trace with hash 998015362, now seen corresponding path program 1 times [2020-10-28 12:11:50,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:11:50,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137407298] [2020-10-28 12:11:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:11:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:51,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:55,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:55,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-28 12:11:55,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:11:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4601 [2020-10-28 12:11:55,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:55,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:11:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:11:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:11:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:55,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:55,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:11:55,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:11:55,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:55,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:11:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:11:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:11:55,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:55,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:11:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:11:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:11:55,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:11:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:55,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:56,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:56,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:11:56,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:11:56,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:56,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:11:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:11:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:11:56,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-28 12:11:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:11:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:11:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:11:56,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:11:56,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:11:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:11:56,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:11:56,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:11:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:11:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:11:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:11:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:11:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 212 proven. 108 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-28 12:11:56,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137407298] [2020-10-28 12:11:56,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:11:56,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:11:56,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164720569] [2020-10-28 12:11:56,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:11:56,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:11:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:11:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:11:56,599 INFO L87 Difference]: Start difference. First operand 15353 states and 18128 transitions. Second operand 8 states. [2020-10-28 12:11:59,874 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-28 12:12:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:01,964 INFO L93 Difference]: Finished difference Result 33391 states and 39438 transitions. [2020-10-28 12:12:01,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:12:01,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 464 [2020-10-28 12:12:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:02,015 INFO L225 Difference]: With dead ends: 33391 [2020-10-28 12:12:02,015 INFO L226 Difference]: Without dead ends: 18422 [2020-10-28 12:12:02,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:12:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18422 states. [2020-10-28 12:12:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18422 to 17257. [2020-10-28 12:12:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17257 states. [2020-10-28 12:12:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17257 states to 17257 states and 20185 transitions. [2020-10-28 12:12:02,433 INFO L78 Accepts]: Start accepts. Automaton has 17257 states and 20185 transitions. Word has length 464 [2020-10-28 12:12:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:02,434 INFO L481 AbstractCegarLoop]: Abstraction has 17257 states and 20185 transitions. [2020-10-28 12:12:02,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:12:02,434 INFO L276 IsEmpty]: Start isEmpty. Operand 17257 states and 20185 transitions. [2020-10-28 12:12:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-28 12:12:02,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:02,474 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:02,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:12:02,474 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:02,475 INFO L82 PathProgramCache]: Analyzing trace with hash -254836090, now seen corresponding path program 1 times [2020-10-28 12:12:02,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:02,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184157283] [2020-10-28 12:12:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:07,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4756 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:07,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:07,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:07,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:07,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:12:07,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:07,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:07,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:07,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:07,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:12:07,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:07,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:12:07,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:07,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:07,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:12:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:07,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:07,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:07,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:12:07,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:12:07,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:07,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:12:07,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:12:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:07,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:07,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:07,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:12:07,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:07,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:07,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:07,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:08,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-28 12:12:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:08,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:08,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 336 proven. 108 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-28 12:12:08,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184157283] [2020-10-28 12:12:08,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:08,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:08,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974028031] [2020-10-28 12:12:08,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:08,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:08,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:08,499 INFO L87 Difference]: Start difference. First operand 17257 states and 20185 transitions. Second operand 7 states. [2020-10-28 12:12:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:13,008 INFO L93 Difference]: Finished difference Result 31946 states and 37725 transitions. [2020-10-28 12:12:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:12:13,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2020-10-28 12:12:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:13,053 INFO L225 Difference]: With dead ends: 31946 [2020-10-28 12:12:13,053 INFO L226 Difference]: Without dead ends: 17191 [2020-10-28 12:12:13,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:13,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17191 states. [2020-10-28 12:12:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17191 to 17059. [2020-10-28 12:12:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17059 states. [2020-10-28 12:12:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17059 states to 17059 states and 19866 transitions. [2020-10-28 12:12:13,463 INFO L78 Accepts]: Start accepts. Automaton has 17059 states and 19866 transitions. Word has length 517 [2020-10-28 12:12:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:13,463 INFO L481 AbstractCegarLoop]: Abstraction has 17059 states and 19866 transitions. [2020-10-28 12:12:13,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand 17059 states and 19866 transitions. [2020-10-28 12:12:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-28 12:12:13,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:13,495 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:13,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:12:13,495 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:13,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:13,496 INFO L82 PathProgramCache]: Analyzing trace with hash 611439614, now seen corresponding path program 1 times [2020-10-28 12:12:13,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:13,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815972390] [2020-10-28 12:12:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:14,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:18,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:18,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:18,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:12:18,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:18,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:18,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:18,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:18,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:12:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:12:18,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:18,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:18,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:12:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:12:19,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:12:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:12:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:12:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:19,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:12:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:19,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:19,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:12:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:19,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:12:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 353 proven. 108 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-28 12:12:19,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815972390] [2020-10-28 12:12:19,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:19,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:19,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849101130] [2020-10-28 12:12:19,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:19,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:19,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:19,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:19,680 INFO L87 Difference]: Start difference. First operand 17059 states and 19866 transitions. Second operand 7 states. [2020-10-28 12:12:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:24,974 INFO L93 Difference]: Finished difference Result 33142 states and 38622 transitions. [2020-10-28 12:12:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:12:24,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-28 12:12:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:25,006 INFO L225 Difference]: With dead ends: 33142 [2020-10-28 12:12:25,007 INFO L226 Difference]: Without dead ends: 17058 [2020-10-28 12:12:25,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:12:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17058 states. [2020-10-28 12:12:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17058 to 15692. [2020-10-28 12:12:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15692 states. [2020-10-28 12:12:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15692 states to 15692 states and 18008 transitions. [2020-10-28 12:12:25,375 INFO L78 Accepts]: Start accepts. Automaton has 15692 states and 18008 transitions. Word has length 544 [2020-10-28 12:12:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:25,376 INFO L481 AbstractCegarLoop]: Abstraction has 15692 states and 18008 transitions. [2020-10-28 12:12:25,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 15692 states and 18008 transitions. [2020-10-28 12:12:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-28 12:12:25,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:25,405 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:25,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:12:25,405 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:25,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash 139499541, now seen corresponding path program 1 times [2020-10-28 12:12:25,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:25,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341389484] [2020-10-28 12:12:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 12:12:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:30,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:30,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:12:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:12:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:12:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:12:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:31,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:31,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:12:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:12:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:31,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:31,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:31,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:31,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 12:12:31,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:31,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 12:12:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-28 12:12:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:31,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:31,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:31,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:31,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:12:31,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:31,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:31,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 267 proven. 248 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-28 12:12:31,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341389484] [2020-10-28 12:12:31,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:31,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:31,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69570248] [2020-10-28 12:12:31,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:31,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:31,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:31,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:31,685 INFO L87 Difference]: Start difference. First operand 15692 states and 18008 transitions. Second operand 7 states. [2020-10-28 12:12:34,998 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:12:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:36,304 INFO L93 Difference]: Finished difference Result 31461 states and 36155 transitions. [2020-10-28 12:12:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:12:36,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-10-28 12:12:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:36,338 INFO L225 Difference]: With dead ends: 31461 [2020-10-28 12:12:36,338 INFO L226 Difference]: Without dead ends: 16153 [2020-10-28 12:12:36,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:12:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16153 states. [2020-10-28 12:12:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16153 to 16100. [2020-10-28 12:12:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16100 states. [2020-10-28 12:12:36,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16100 states to 16100 states and 18323 transitions. [2020-10-28 12:12:36,625 INFO L78 Accepts]: Start accepts. Automaton has 16100 states and 18323 transitions. Word has length 586 [2020-10-28 12:12:36,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:36,625 INFO L481 AbstractCegarLoop]: Abstraction has 16100 states and 18323 transitions. [2020-10-28 12:12:36,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 16100 states and 18323 transitions. [2020-10-28 12:12:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-28 12:12:36,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:36,655 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:36,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:12:36,656 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:36,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1100525283, now seen corresponding path program 1 times [2020-10-28 12:12:36,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:36,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340175237] [2020-10-28 12:12:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-28 12:12:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:12:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3322 [2020-10-28 12:12:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:40,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:12:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:12:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:40,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:40,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:40,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:40,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:12:40,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:40,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:40,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:40,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:40,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:40,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:12:40,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:12:40,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:40,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:40,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:40,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:12:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:40,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:40,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:40,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:12:40,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:12:40,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:40,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:40,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:12:40,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:12:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:40,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:12:40,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-28 12:12:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:40,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 361 proven. 108 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-28 12:12:41,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340175237] [2020-10-28 12:12:41,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:41,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:41,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287328635] [2020-10-28 12:12:41,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:41,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:41,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:41,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:41,356 INFO L87 Difference]: Start difference. First operand 16100 states and 18323 transitions. Second operand 7 states. [2020-10-28 12:12:45,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:45,340 INFO L93 Difference]: Finished difference Result 29347 states and 33494 transitions. [2020-10-28 12:12:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:12:45,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-10-28 12:12:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:45,379 INFO L225 Difference]: With dead ends: 29347 [2020-10-28 12:12:45,379 INFO L226 Difference]: Without dead ends: 16331 [2020-10-28 12:12:45,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:12:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2020-10-28 12:12:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 16288. [2020-10-28 12:12:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16288 states. [2020-10-28 12:12:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16288 states to 16288 states and 18531 transitions. [2020-10-28 12:12:45,704 INFO L78 Accepts]: Start accepts. Automaton has 16288 states and 18531 transitions. Word has length 586 [2020-10-28 12:12:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:45,704 INFO L481 AbstractCegarLoop]: Abstraction has 16288 states and 18531 transitions. [2020-10-28 12:12:45,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 16288 states and 18531 transitions. [2020-10-28 12:12:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-10-28 12:12:45,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:45,733 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:45,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:12:45,734 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:45,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:45,734 INFO L82 PathProgramCache]: Analyzing trace with hash 353111953, now seen corresponding path program 1 times [2020-10-28 12:12:45,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:45,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758793606] [2020-10-28 12:12:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:46,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:50,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:50,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 625 [2020-10-28 12:12:50,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:12:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-28 12:12:50,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:50,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:12:50,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 12:12:50,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:51,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:12:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:51,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:51,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:51,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:12:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:12:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:51,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:51,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:12:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 12:12:51,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:51,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:12:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:12:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-28 12:12:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:51,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:51,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:12:51,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:51,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:12:51,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:51,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-28 12:12:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:51,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-28 12:12:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:52,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:52,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:12:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:12:52,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:52,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 12:12:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 284 proven. 248 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-28 12:12:52,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758793606] [2020-10-28 12:12:52,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:52,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:12:52,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760339457] [2020-10-28 12:12:52,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:12:52,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:52,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:12:52,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:12:52,514 INFO L87 Difference]: Start difference. First operand 16288 states and 18531 transitions. Second operand 7 states. [2020-10-28 12:12:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:56,466 INFO L93 Difference]: Finished difference Result 31669 states and 36110 transitions. [2020-10-28 12:12:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:12:56,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 607 [2020-10-28 12:12:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:56,502 INFO L225 Difference]: With dead ends: 31669 [2020-10-28 12:12:56,502 INFO L226 Difference]: Without dead ends: 14984 [2020-10-28 12:12:56,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:12:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14984 states. [2020-10-28 12:12:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14984 to 14557. [2020-10-28 12:12:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14557 states. [2020-10-28 12:12:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14557 states to 14557 states and 16543 transitions. [2020-10-28 12:12:56,738 INFO L78 Accepts]: Start accepts. Automaton has 14557 states and 16543 transitions. Word has length 607 [2020-10-28 12:12:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:56,738 INFO L481 AbstractCegarLoop]: Abstraction has 14557 states and 16543 transitions. [2020-10-28 12:12:56,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:12:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 14557 states and 16543 transitions. [2020-10-28 12:12:56,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-10-28 12:12:56,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:56,758 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:12:56,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:12:56,759 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:56,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1918747605, now seen corresponding path program 1 times [2020-10-28 12:12:56,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:56,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245240854] [2020-10-28 12:12:56,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:57,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:57,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:59,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 625 [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3068 [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 320 [2020-10-28 12:12:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:00,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:13:00,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:13:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:13:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:13:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:13:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:13:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:13:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-28 12:13:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:13:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:00,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-10-28 12:13:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:00,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 12:13:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 143 proven. 8 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2020-10-28 12:13:01,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245240854] [2020-10-28 12:13:01,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:13:01,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:13:01,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389208413] [2020-10-28 12:13:01,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:13:01,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:01,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:13:01,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:13:01,117 INFO L87 Difference]: Start difference. First operand 14557 states and 16543 transitions. Second operand 5 states. [2020-10-28 12:13:04,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:04,543 INFO L93 Difference]: Finished difference Result 26996 states and 30830 transitions. [2020-10-28 12:13:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:04,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 607 [2020-10-28 12:13:04,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:04,579 INFO L225 Difference]: With dead ends: 26996 [2020-10-28 12:13:04,580 INFO L226 Difference]: Without dead ends: 13987 [2020-10-28 12:13:04,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13987 states. [2020-10-28 12:13:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13987 to 13761. [2020-10-28 12:13:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13761 states. [2020-10-28 12:13:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13761 states to 13761 states and 15544 transitions. [2020-10-28 12:13:04,839 INFO L78 Accepts]: Start accepts. Automaton has 13761 states and 15544 transitions. Word has length 607 [2020-10-28 12:13:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:04,840 INFO L481 AbstractCegarLoop]: Abstraction has 13761 states and 15544 transitions. [2020-10-28 12:13:04,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 13761 states and 15544 transitions. [2020-10-28 12:13:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-28 12:13:04,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:04,868 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:04,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:13:04,868 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:04,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1182006777, now seen corresponding path program 1 times [2020-10-28 12:13:04,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:04,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339840573] [2020-10-28 12:13:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking...