/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-tiling/rew.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:11:37,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:11:37,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:11:37,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:11:37,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:11:37,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:11:37,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:11:37,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:11:37,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:11:37,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:11:37,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:11:37,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:11:37,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:11:37,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:11:37,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:11:37,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:11:37,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:11:37,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:11:37,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:11:37,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:11:37,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:11:37,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:11:37,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:11:37,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:11:37,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:11:37,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:11:37,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:11:37,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:11:37,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:11:37,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:11:37,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:11:37,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:11:37,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:11:37,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:11:37,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:11:37,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:11:37,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:11:37,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:11:37,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:11:37,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:11:37,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:11:37,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:11:37,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:11:37,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:11:37,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:11:37,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:11:37,527 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:11:37,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:11:37,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:11:37,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:11:37,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:11:37,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:11:37,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:11:37,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:11:37,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:11:37,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:11:37,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:11:37,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:11:37,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:11:37,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:11:37,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:11:37,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:11:37,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:11:37,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:11:37,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:11:37,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:11:37,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:11:37,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:11:37,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:11:37,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:11:37,533 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:11:37,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:11:38,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:11:38,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:11:38,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:11:38,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:11:38,122 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:11:38,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rew.c [2020-10-29 04:11:38,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e59f8d2d4/d3140d3cb71a4f3fbaae22efa704e78d/FLAGde28855a8 [2020-10-29 04:11:38,818 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:11:38,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rew.c [2020-10-29 04:11:38,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e59f8d2d4/d3140d3cb71a4f3fbaae22efa704e78d/FLAGde28855a8 [2020-10-29 04:11:39,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e59f8d2d4/d3140d3cb71a4f3fbaae22efa704e78d [2020-10-29 04:11:39,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:11:39,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:11:39,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:11:39,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:11:39,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:11:39,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522b80ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39, skipping insertion in model container [2020-10-29 04:11:39,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:11:39,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:11:39,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:11:39,436 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:11:39,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:11:39,505 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:11:39,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39 WrapperNode [2020-10-29 04:11:39,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:11:39,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:11:39,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:11:39,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:11:39,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... [2020-10-29 04:11:39,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:11:39,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:11:39,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:11:39,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:11:39,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:11:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:11:39,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:11:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:11:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 04:11:39,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:11:39,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:11:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:11:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:11:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:11:39,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:11:39,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 04:11:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:11:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:11:39,722 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 04:11:39,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:11:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 04:11:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:11:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:11:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:11:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:11:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:11:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:11:40,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:11:40,195 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 04:11:40,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:11:40 BoogieIcfgContainer [2020-10-29 04:11:40,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:11:40,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:11:40,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:11:40,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:11:40,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:11:39" (1/3) ... [2020-10-29 04:11:40,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733104f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:11:40, skipping insertion in model container [2020-10-29 04:11:40,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:11:39" (2/3) ... [2020-10-29 04:11:40,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733104f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:11:40, skipping insertion in model container [2020-10-29 04:11:40,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:11:40" (3/3) ... [2020-10-29 04:11:40,211 INFO L111 eAbstractionObserver]: Analyzing ICFG rew.c [2020-10-29 04:11:40,226 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:11:40,236 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:11:40,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:11:40,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:11:40,300 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:11:40,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:11:40,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:11:40,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:11:40,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:11:40,301 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:11:40,301 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:11:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-29 04:11:40,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 04:11:40,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:40,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:40,340 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:40,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1534732962, now seen corresponding path program 1 times [2020-10-29 04:11:40,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:40,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196290899] [2020-10-29 04:11:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:40,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:40,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:40,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:11:40,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:40,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 04:11:40,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:40,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:11:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 04:11:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:40,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:40,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:40,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:40,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:11:40,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:40,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:40,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:40,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196290899] [2020-10-29 04:11:40,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:40,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:11:40,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242752042] [2020-10-29 04:11:40,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 04:11:40,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:40,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 04:11:40,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:11:40,993 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-29 04:11:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:41,112 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-29 04:11:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 04:11:41,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-29 04:11:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:41,122 INFO L225 Difference]: With dead ends: 48 [2020-10-29 04:11:41,123 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 04:11:41,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:11:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 04:11:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 04:11:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 04:11:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-29 04:11:41,172 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-29 04:11:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:41,173 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-29 04:11:41,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 04:11:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-29 04:11:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 04:11:41,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:41,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:41,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:11:41,175 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:41,176 INFO L82 PathProgramCache]: Analyzing trace with hash 353035087, now seen corresponding path program 1 times [2020-10-29 04:11:41,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:41,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022555703] [2020-10-29 04:11:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:41,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:41,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:11:41,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 04:11:41,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:41,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:11:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:41,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:41,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:41,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:11:41,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:41,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:41,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022555703] [2020-10-29 04:11:41,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:11:41,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:11:41,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643003139] [2020-10-29 04:11:41,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:11:41,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:41,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:11:41,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:41,603 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-10-29 04:11:41,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:41,821 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-29 04:11:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:11:41,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 04:11:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:41,823 INFO L225 Difference]: With dead ends: 43 [2020-10-29 04:11:41,824 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 04:11:41,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:11:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 04:11:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-29 04:11:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 04:11:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-29 04:11:41,842 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 15 [2020-10-29 04:11:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:41,843 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-29 04:11:41,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:11:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-29 04:11:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 04:11:41,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:41,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:41,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:11:41,846 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1307166964, now seen corresponding path program 1 times [2020-10-29 04:11:41,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:41,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377874129] [2020-10-29 04:11:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:41,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:42,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:42,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:11:42,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-29 04:11:42,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:42,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:11:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:11:42,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:42,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:42,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:42,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:42,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:42,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:11:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:42,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:42,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377874129] [2020-10-29 04:11:42,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:42,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:11:42,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344442256] [2020-10-29 04:11:42,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:11:42,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:42,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:11:42,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:11:42,876 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2020-10-29 04:11:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:43,266 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-29 04:11:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:11:43,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-29 04:11:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:43,271 INFO L225 Difference]: With dead ends: 46 [2020-10-29 04:11:43,271 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 04:11:43,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:11:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 04:11:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-29 04:11:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 04:11:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-29 04:11:43,290 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19 [2020-10-29 04:11:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:43,291 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-29 04:11:43,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:11:43,291 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-29 04:11:43,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 04:11:43,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:43,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:43,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:11:43,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:43,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:43,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1948036071, now seen corresponding path program 2 times [2020-10-29 04:11:43,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:43,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7819856] [2020-10-29 04:11:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:43,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:43,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:11:43,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:11:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-29 04:11:43,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:43,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:11:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:11:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:44,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:44,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:11:44,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:44,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:44,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7819856] [2020-10-29 04:11:44,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:44,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:11:44,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025344087] [2020-10-29 04:11:44,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:11:44,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:44,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:11:44,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:11:44,283 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 12 states. [2020-10-29 04:11:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:44,822 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-10-29 04:11:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:11:44,823 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-29 04:11:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:44,827 INFO L225 Difference]: With dead ends: 70 [2020-10-29 04:11:44,827 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 04:11:44,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:11:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 04:11:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-10-29 04:11:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 04:11:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-29 04:11:44,840 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 23 [2020-10-29 04:11:44,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:44,841 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-29 04:11:44,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:11:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-29 04:11:44,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 04:11:44,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:44,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:44,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:11:44,843 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:44,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:44,843 INFO L82 PathProgramCache]: Analyzing trace with hash -450750051, now seen corresponding path program 1 times [2020-10-29 04:11:44,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:44,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233813035] [2020-10-29 04:11:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:44,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:45,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:11:45,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:11:45,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-29 04:11:45,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:45,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 04:11:45,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:45,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:45,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:45,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:45,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:45,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:45,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:45,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:45,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:45,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:45,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-29 04:11:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:45,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:11:45,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:45,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:11:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:11:45,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233813035] [2020-10-29 04:11:45,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:45,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:11:45,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522455439] [2020-10-29 04:11:45,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:11:45,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:45,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:11:45,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:11:45,101 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-10-29 04:11:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:45,208 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-29 04:11:45,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:11:45,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-29 04:11:45,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:45,210 INFO L225 Difference]: With dead ends: 68 [2020-10-29 04:11:45,210 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 04:11:45,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:11:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 04:11:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-29 04:11:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 04:11:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-29 04:11:45,220 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 27 [2020-10-29 04:11:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:45,221 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-29 04:11:45,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:11:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-29 04:11:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:11:45,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:45,222 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:11:45,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:11:45,223 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:45,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1268347716, now seen corresponding path program 1 times [2020-10-29 04:11:45,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:45,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987695923] [2020-10-29 04:11:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:45,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 04:11:45,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:45,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 04:11:45,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:45,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:11:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:11:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:45,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:45,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:45,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:45,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:45,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:45,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:45,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:45,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:45,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 04:11:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:45,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:45,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:45,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:45,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:45,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:45,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987695923] [2020-10-29 04:11:45,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:45,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:11:45,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654627101] [2020-10-29 04:11:45,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:11:45,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:45,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:11:45,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:11:45,678 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 11 states. [2020-10-29 04:11:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:46,163 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-29 04:11:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:11:46,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-29 04:11:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:46,165 INFO L225 Difference]: With dead ends: 69 [2020-10-29 04:11:46,165 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 04:11:46,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:11:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 04:11:46,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-10-29 04:11:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 04:11:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-29 04:11:46,179 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 31 [2020-10-29 04:11:46,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:46,179 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-29 04:11:46,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:11:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-29 04:11:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 04:11:46,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:46,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:46,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:11:46,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1022050203, now seen corresponding path program 1 times [2020-10-29 04:11:46,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:46,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795762673] [2020-10-29 04:11:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:47,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:11:47,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-29 04:11:47,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:47,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:11:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:11:47,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:47,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:47,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:47,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:47,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:47,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:47,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:47,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:47,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:11:47,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795762673] [2020-10-29 04:11:47,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:47,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:11:47,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050142938] [2020-10-29 04:11:47,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:11:47,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:47,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:11:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:11:47,768 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 14 states. [2020-10-29 04:11:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:48,302 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2020-10-29 04:11:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:11:48,303 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-29 04:11:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:48,306 INFO L225 Difference]: With dead ends: 76 [2020-10-29 04:11:48,306 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 04:11:48,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:11:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 04:11:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2020-10-29 04:11:48,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 04:11:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-29 04:11:48,322 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 31 [2020-10-29 04:11:48,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:48,322 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-29 04:11:48,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:11:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-29 04:11:48,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 04:11:48,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:48,324 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:11:48,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:11:48,325 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:48,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:48,325 INFO L82 PathProgramCache]: Analyzing trace with hash -108368151, now seen corresponding path program 2 times [2020-10-29 04:11:48,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:48,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777495616] [2020-10-29 04:11:48,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:48,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:48,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 04:11:48,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-29 04:11:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:48,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:11:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:11:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:48,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:48,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:48,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:11:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:48,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:48,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777495616] [2020-10-29 04:11:48,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:48,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:11:48,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339896506] [2020-10-29 04:11:48,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:11:48,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:48,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:11:48,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:11:48,900 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 12 states. [2020-10-29 04:11:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:49,444 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2020-10-29 04:11:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:11:49,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-29 04:11:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:49,446 INFO L225 Difference]: With dead ends: 90 [2020-10-29 04:11:49,446 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 04:11:49,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:11:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 04:11:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70. [2020-10-29 04:11:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 04:11:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2020-10-29 04:11:49,460 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 35 [2020-10-29 04:11:49,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:49,461 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2020-10-29 04:11:49,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:11:49,461 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2020-10-29 04:11:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 04:11:49,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:49,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:49,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:11:49,463 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:49,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1964346387, now seen corresponding path program 3 times [2020-10-29 04:11:49,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:49,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849856274] [2020-10-29 04:11:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:49,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 04:11:50,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:11:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-29 04:11:50,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:11:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:11:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:11:50,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:50,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:11:50,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:50,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 04:11:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:50,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:11:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:50,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:11:50,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849856274] [2020-10-29 04:11:50,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:50,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:11:50,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151162545] [2020-10-29 04:11:50,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:11:50,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:50,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:11:50,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:11:50,647 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand 9 states. [2020-10-29 04:11:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:50,936 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2020-10-29 04:11:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:11:50,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-29 04:11:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:50,938 INFO L225 Difference]: With dead ends: 138 [2020-10-29 04:11:50,938 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 04:11:50,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:11:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 04:11:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-10-29 04:11:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 04:11:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-29 04:11:50,949 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 39 [2020-10-29 04:11:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:50,950 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-29 04:11:50,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:11:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-29 04:11:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 04:11:50,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:50,951 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:50,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:11:50,951 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash 161157134, now seen corresponding path program 4 times [2020-10-29 04:11:50,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:50,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894389150] [2020-10-29 04:11:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:50,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:51,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 04:11:51,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:11:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-29 04:11:51,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:51,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:11:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:11:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:51,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:51,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:51,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:51,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:51,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:51,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:51,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:11:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:51,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:51,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:51,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:51,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:11:51,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:51,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:51,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:51,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:11:51,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894389150] [2020-10-29 04:11:51,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:51,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:11:51,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413959118] [2020-10-29 04:11:51,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:11:51,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:51,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:11:51,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:11:51,939 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 15 states. [2020-10-29 04:11:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:52,641 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-29 04:11:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:11:52,641 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-29 04:11:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:52,643 INFO L225 Difference]: With dead ends: 74 [2020-10-29 04:11:52,643 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 04:11:52,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:11:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 04:11:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2020-10-29 04:11:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 04:11:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-29 04:11:52,652 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 39 [2020-10-29 04:11:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:52,653 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-29 04:11:52,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:11:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-29 04:11:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 04:11:52,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:52,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:52,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:11:52,655 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash -238290286, now seen corresponding path program 5 times [2020-10-29 04:11:52,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:52,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562607619] [2020-10-29 04:11:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:52,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:54,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 04:11:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-29 04:11:54,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:54,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:11:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:54,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 04:11:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:54,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:54,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:54,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:54,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:54,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:11:54,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:54,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:11:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:54,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:54,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:54,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:54,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:54,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:54,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:11:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:54,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:54,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:54,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:54,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:54,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:11:54,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562607619] [2020-10-29 04:11:54,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:54,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:11:54,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873500994] [2020-10-29 04:11:54,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:11:54,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:54,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:11:54,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:11:54,421 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 13 states. [2020-10-29 04:11:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:55,075 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-29 04:11:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:11:55,077 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-29 04:11:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:55,079 INFO L225 Difference]: With dead ends: 82 [2020-10-29 04:11:55,079 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 04:11:55,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:11:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 04:11:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-10-29 04:11:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 04:11:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-29 04:11:55,107 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 43 [2020-10-29 04:11:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:55,107 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-29 04:11:55,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:11:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-29 04:11:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 04:11:55,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:55,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:55,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:11:55,111 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1771022007, now seen corresponding path program 6 times [2020-10-29 04:11:55,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:55,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932233915] [2020-10-29 04:11:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:57,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:11:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:11:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2123 [2020-10-29 04:11:57,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:57,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:11:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:11:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 04:11:57,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:57,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:11:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:57,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:57,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:11:57,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:57,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:57,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:11:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:57,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:11:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:11:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:57,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:57,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:57,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:57,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:57,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:57,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:57,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:57,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:11:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:57,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:11:57,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:11:57,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:11:57,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:11:57,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:11:57,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:11:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:11:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:11:57,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:11:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:11:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:11:57,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932233915] [2020-10-29 04:11:57,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:11:57,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:11:57,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018536870] [2020-10-29 04:11:57,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:11:57,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:11:57,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:11:57,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:11:57,590 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 14 states. [2020-10-29 04:11:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:11:58,352 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-10-29 04:11:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:11:58,353 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-29 04:11:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:11:58,355 INFO L225 Difference]: With dead ends: 99 [2020-10-29 04:11:58,355 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 04:11:58,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:11:58,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 04:11:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2020-10-29 04:11:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 04:11:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2020-10-29 04:11:58,368 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 47 [2020-10-29 04:11:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:11:58,368 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2020-10-29 04:11:58,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:11:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2020-10-29 04:11:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:11:58,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:11:58,369 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:11:58,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:11:58,370 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:11:58,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:11:58,370 INFO L82 PathProgramCache]: Analyzing trace with hash 578800955, now seen corresponding path program 7 times [2020-10-29 04:11:58,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:11:58,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414125129] [2020-10-29 04:11:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:11:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:11:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:11:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:00,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 04:12:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:12:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3350 [2020-10-29 04:12:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:12:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:12:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:01,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:12:01,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:12:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:01,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:01,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:01,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:12:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:01,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:01,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:01,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:01,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:01,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:01,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:01,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:12:01,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414125129] [2020-10-29 04:12:01,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:01,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:12:01,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098956354] [2020-10-29 04:12:01,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:12:01,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:01,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:12:01,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:12:01,902 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 11 states. [2020-10-29 04:12:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:02,262 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2020-10-29 04:12:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:12:02,263 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-29 04:12:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:02,264 INFO L225 Difference]: With dead ends: 118 [2020-10-29 04:12:02,264 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 04:12:02,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:12:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 04:12:02,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-10-29 04:12:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 04:12:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-29 04:12:02,278 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 51 [2020-10-29 04:12:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:02,278 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-29 04:12:02,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:12:02,278 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-29 04:12:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:12:02,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:02,279 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:02,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:12:02,279 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:02,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:02,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1046038436, now seen corresponding path program 8 times [2020-10-29 04:12:02,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:02,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053654072] [2020-10-29 04:12:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:05,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:05,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:12:05,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:12:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3632 [2020-10-29 04:12:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:05,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:12:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:12:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:06,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:06,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:06,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:06,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:12:06,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:06,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:06,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:06,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:06,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:06,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:06,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:06,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:12:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:06,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:06,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:06,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:06,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:06,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 5 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:12:06,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053654072] [2020-10-29 04:12:06,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:06,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:12:06,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998598001] [2020-10-29 04:12:06,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:12:06,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:06,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:12:06,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:12:06,289 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 17 states. [2020-10-29 04:12:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:07,161 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-10-29 04:12:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:12:07,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-10-29 04:12:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:07,165 INFO L225 Difference]: With dead ends: 107 [2020-10-29 04:12:07,166 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 04:12:07,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:12:07,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 04:12:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 76. [2020-10-29 04:12:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 04:12:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-10-29 04:12:07,184 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 51 [2020-10-29 04:12:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:07,184 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-10-29 04:12:07,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:12:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-10-29 04:12:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 04:12:07,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:07,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:07,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:12:07,193 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1883536288, now seen corresponding path program 9 times [2020-10-29 04:12:07,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:07,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048954427] [2020-10-29 04:12:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:07,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:09,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:12:09,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:12:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2631 [2020-10-29 04:12:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:09,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:12:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 04:12:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:10,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:10,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:10,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:12:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:10,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:10,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:10,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:12:10,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:12:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:10,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:10,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:10,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:10,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:10,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:12:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:10,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:10,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:10,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:10,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:10,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:12:10,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048954427] [2020-10-29 04:12:10,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:10,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:12:10,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489365713] [2020-10-29 04:12:10,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:12:10,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:12:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:12:10,165 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 15 states. [2020-10-29 04:12:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:11,105 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-10-29 04:12:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:12:11,106 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-29 04:12:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:11,109 INFO L225 Difference]: With dead ends: 107 [2020-10-29 04:12:11,110 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 04:12:11,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:12:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 04:12:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2020-10-29 04:12:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 04:12:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-29 04:12:11,136 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 55 [2020-10-29 04:12:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:11,137 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-29 04:12:11,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:12:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-29 04:12:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 04:12:11,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:11,138 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:11,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:12:11,138 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash 786591617, now seen corresponding path program 10 times [2020-10-29 04:12:11,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:11,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901374134] [2020-10-29 04:12:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:11,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:14,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:14,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:12:14,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:12:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3632 [2020-10-29 04:12:14,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:14,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:12:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 04:12:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:15,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:15,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:15,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:12:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:12:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:15,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:15,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:15,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:15,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:15,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:15,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:12:15,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901374134] [2020-10-29 04:12:15,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:15,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:12:15,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814498169] [2020-10-29 04:12:15,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:12:15,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:15,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:12:15,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:12:15,322 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 17 states. [2020-10-29 04:12:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:16,256 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-10-29 04:12:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:12:16,257 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-29 04:12:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:16,258 INFO L225 Difference]: With dead ends: 111 [2020-10-29 04:12:16,258 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 04:12:16,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:12:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 04:12:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2020-10-29 04:12:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 04:12:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-29 04:12:16,276 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 55 [2020-10-29 04:12:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:16,277 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-29 04:12:16,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:12:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-29 04:12:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:12:16,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:16,278 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:16,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:12:16,278 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:16,279 INFO L82 PathProgramCache]: Analyzing trace with hash -62054139, now seen corresponding path program 11 times [2020-10-29 04:12:16,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:16,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820333203] [2020-10-29 04:12:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:20,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:20,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 04:12:20,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:12:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-10-29 04:12:20,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:20,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:12:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:20,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:12:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:20,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:20,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:20,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:12:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:20,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:20,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:20,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:12:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:20,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:20,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:20,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:20,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:20,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:20,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:20,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:12:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:20,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:20,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:20,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:20,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:12:20,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820333203] [2020-10-29 04:12:20,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:20,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:12:20,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757387942] [2020-10-29 04:12:20,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:12:20,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:20,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:12:20,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:12:20,414 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 16 states. [2020-10-29 04:12:21,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:21,466 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2020-10-29 04:12:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:12:21,468 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-29 04:12:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:21,470 INFO L225 Difference]: With dead ends: 123 [2020-10-29 04:12:21,470 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 04:12:21,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:12:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 04:12:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 84. [2020-10-29 04:12:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 04:12:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-10-29 04:12:21,485 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 59 [2020-10-29 04:12:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:21,485 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-10-29 04:12:21,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:12:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-10-29 04:12:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:12:21,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:21,486 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:21,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:12:21,487 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1340582153, now seen corresponding path program 12 times [2020-10-29 04:12:21,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:21,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001190823] [2020-10-29 04:12:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:21,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:24,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:24,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:24,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 04:12:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 04:12:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:12:26,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:26,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:12:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 04:12:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:26,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:26,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:12:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:26,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 04:12:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:26,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:26,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:26,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:12:26,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:26,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:26,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:12:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:26,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:26,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:26,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:26,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:26,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:26,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:12:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:26,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:26,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:26,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:26,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:26,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:12:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:12:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:26,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:26,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:26,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:12:26,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001190823] [2020-10-29 04:12:26,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:26,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:12:26,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680365610] [2020-10-29 04:12:26,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:12:26,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:26,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:12:26,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:12:26,723 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 13 states. [2020-10-29 04:12:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:27,333 INFO L93 Difference]: Finished difference Result 142 states and 149 transitions. [2020-10-29 04:12:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:12:27,334 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-10-29 04:12:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:27,335 INFO L225 Difference]: With dead ends: 142 [2020-10-29 04:12:27,336 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 04:12:27,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:12:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 04:12:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2020-10-29 04:12:27,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 04:12:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-29 04:12:27,364 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 63 [2020-10-29 04:12:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:27,364 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-29 04:12:27,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:12:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-29 04:12:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:12:27,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:27,372 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:27,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:12:27,372 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1472586538, now seen corresponding path program 13 times [2020-10-29 04:12:27,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:27,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232838856] [2020-10-29 04:12:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:30,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:32,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:32,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:12:32,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:12:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4667 [2020-10-29 04:12:32,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:32,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:12:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:32,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 04:12:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:32,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:32,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:32,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:32,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:12:32,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:32,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:12:32,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:12:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:32,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:32,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:32,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:12:32,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:32,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:32,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:12:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:32,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:32,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:32,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:32,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:12:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:32,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:32,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:32,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:32,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:12:32,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:32,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:12:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 83 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 04:12:32,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232838856] [2020-10-29 04:12:32,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:32,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:12:32,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913719843] [2020-10-29 04:12:32,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:12:32,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:32,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:12:32,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:12:32,708 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 19 states. [2020-10-29 04:12:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:33,852 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-29 04:12:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:12:33,854 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-29 04:12:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:33,855 INFO L225 Difference]: With dead ends: 131 [2020-10-29 04:12:33,855 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 04:12:33,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:12:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 04:12:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2020-10-29 04:12:33,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 04:12:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-10-29 04:12:33,873 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 63 [2020-10-29 04:12:33,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:33,874 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-10-29 04:12:33,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:12:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-10-29 04:12:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 04:12:33,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:33,875 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:33,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:12:33,875 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:33,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:33,876 INFO L82 PathProgramCache]: Analyzing trace with hash -549924690, now seen corresponding path program 14 times [2020-10-29 04:12:33,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:33,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507526676] [2020-10-29 04:12:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:33,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:37,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 04:12:38,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:39,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:39,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:39,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:39,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:12:39,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:39,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:39,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:39,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:39,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:39,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:12:39,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:39,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:12:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:39,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:39,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:39,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:39,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:12:39,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:39,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:39,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:12:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:39,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:39,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:39,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:12:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:39,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:39,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:39,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:39,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:12:39,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507526676] [2020-10-29 04:12:39,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:39,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:12:39,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517255749] [2020-10-29 04:12:39,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:12:39,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:12:39,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:12:39,311 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 17 states. [2020-10-29 04:12:40,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:40,486 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-29 04:12:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:12:40,487 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-10-29 04:12:40,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:40,488 INFO L225 Difference]: With dead ends: 131 [2020-10-29 04:12:40,489 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 04:12:40,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:12:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 04:12:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-10-29 04:12:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 04:12:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2020-10-29 04:12:40,508 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 67 [2020-10-29 04:12:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:40,508 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2020-10-29 04:12:40,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:12:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2020-10-29 04:12:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 04:12:40,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:40,509 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:40,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:12:40,510 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash -417920305, now seen corresponding path program 15 times [2020-10-29 04:12:40,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:40,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658536147] [2020-10-29 04:12:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:40,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:42,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:42,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4585 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 04:12:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:45,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:12:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:45,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:12:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:45,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:12:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:45,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 6 proven. 107 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:12:45,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658536147] [2020-10-29 04:12:45,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:45,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:12:45,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837889288] [2020-10-29 04:12:45,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:12:45,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:45,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:12:45,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:12:45,808 INFO L87 Difference]: Start difference. First operand 122 states and 131 transitions. Second operand 19 states. [2020-10-29 04:12:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:47,048 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2020-10-29 04:12:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:12:47,049 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2020-10-29 04:12:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:47,051 INFO L225 Difference]: With dead ends: 135 [2020-10-29 04:12:47,051 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 04:12:47,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:12:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 04:12:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 122. [2020-10-29 04:12:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 04:12:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 131 transitions. [2020-10-29 04:12:47,075 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 131 transitions. Word has length 67 [2020-10-29 04:12:47,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:47,075 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 131 transitions. [2020-10-29 04:12:47,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:12:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 131 transitions. [2020-10-29 04:12:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 04:12:47,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:47,077 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:47,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:12:47,077 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1934385709, now seen corresponding path program 16 times [2020-10-29 04:12:47,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:47,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548625568] [2020-10-29 04:12:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:47,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:47,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:49,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:52,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:52,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 04:12:52,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 04:12:52,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:12:52,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:52,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:12:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:52,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 04:12:52,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:52,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:52,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:52,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:52,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:52,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:52,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:12:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:52,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:52,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:12:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:52,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:52,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:52,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:12:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:52,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:52,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:52,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:52,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:52,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:12:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:52,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:52,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:52,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:52,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:52,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:52,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:52,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 98 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:12:52,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548625568] [2020-10-29 04:12:52,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:52,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:12:52,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564027710] [2020-10-29 04:12:52,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:12:52,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:52,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:12:52,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:12:52,521 INFO L87 Difference]: Start difference. First operand 122 states and 131 transitions. Second operand 18 states. [2020-10-29 04:12:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:53,877 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2020-10-29 04:12:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:12:53,878 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 71 [2020-10-29 04:12:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:53,881 INFO L225 Difference]: With dead ends: 147 [2020-10-29 04:12:53,881 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 04:12:53,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2020-10-29 04:12:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 04:12:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-10-29 04:12:53,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-29 04:12:53,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2020-10-29 04:12:53,904 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 71 [2020-10-29 04:12:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:53,904 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2020-10-29 04:12:53,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:12:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2020-10-29 04:12:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 04:12:53,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:53,906 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:53,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:12:53,906 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:53,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1345505111, now seen corresponding path program 17 times [2020-10-29 04:12:53,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:53,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615359064] [2020-10-29 04:12:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:53,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:53,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:56,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:58,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:58,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:58,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 04:12:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:59,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:12:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:59,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:59,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:12:59,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:12:59,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:59,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:12:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:12:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 04:12:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:59,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:59,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:59,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:59,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:59,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:59,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:59,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:59,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:12:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:59,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:59,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:59,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:59,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:12:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:59,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:12:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:59,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:59,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:59,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:12:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:12:59,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:12:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:12:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 60 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:12:59,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615359064] [2020-10-29 04:12:59,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:12:59,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:12:59,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608707065] [2020-10-29 04:12:59,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:12:59,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:12:59,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:12:59,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:12:59,160 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand 15 states. [2020-10-29 04:12:59,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:12:59,699 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-29 04:12:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:12:59,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2020-10-29 04:12:59,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:12:59,701 INFO L225 Difference]: With dead ends: 166 [2020-10-29 04:12:59,701 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 04:12:59,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:12:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 04:12:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2020-10-29 04:12:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 04:12:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2020-10-29 04:12:59,720 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 75 [2020-10-29 04:12:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:12:59,720 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2020-10-29 04:12:59,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:12:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2020-10-29 04:12:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 04:12:59,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:12:59,721 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:12:59,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:12:59,721 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:12:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:12:59,723 INFO L82 PathProgramCache]: Analyzing trace with hash 940134520, now seen corresponding path program 18 times [2020-10-29 04:12:59,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:12:59,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524137357] [2020-10-29 04:12:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:12:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:12:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:12:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:02,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:04,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:04,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 04:13:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:05,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:05,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:05,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:05,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:05,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:13:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:05,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:05,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:05,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:05,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:05,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:05,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:05,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:13:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:05,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:05,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:05,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:05,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:05,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:05,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:05,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:13:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:05,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:05,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:05,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:05,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:05,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:05,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:05,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:05,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 9 proven. 122 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:13:05,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524137357] [2020-10-29 04:13:05,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:05,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:13:05,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741151176] [2020-10-29 04:13:05,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:13:05,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:05,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:13:05,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:13:05,262 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand 21 states. [2020-10-29 04:13:06,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:06,718 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2020-10-29 04:13:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:13:06,719 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-10-29 04:13:06,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:06,720 INFO L225 Difference]: With dead ends: 151 [2020-10-29 04:13:06,720 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 04:13:06,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:13:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 04:13:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2020-10-29 04:13:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 04:13:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2020-10-29 04:13:06,757 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 75 [2020-10-29 04:13:06,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:06,758 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2020-10-29 04:13:06,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:13:06,758 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2020-10-29 04:13:06,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 04:13:06,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:06,759 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:06,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:13:06,760 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:06,760 INFO L82 PathProgramCache]: Analyzing trace with hash 510959484, now seen corresponding path program 19 times [2020-10-29 04:13:06,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:06,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740869098] [2020-10-29 04:13:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:07,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:09,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:10,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:11,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:11,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 04:13:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 04:13:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:13:11,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:11,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:13:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:13:11,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:12,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:12,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:12,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:12,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:12,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:13:12,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:12,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:12,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:13:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:12,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:12,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:12,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:12,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:12,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:12,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:13:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:12,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:12,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:12,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:12,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:12,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:12,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:12,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:12,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:13:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:12,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:12,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:12,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:12,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:12,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:13:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:12,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:12,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:12,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:12,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:12,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:13:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:12,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-29 04:13:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 10 proven. 116 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:13:12,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740869098] [2020-10-29 04:13:12,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:12,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:13:12,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360279986] [2020-10-29 04:13:12,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:13:12,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:12,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:13:12,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:13:12,312 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand 19 states. [2020-10-29 04:13:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:13,872 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2020-10-29 04:13:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:13:13,872 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 79 [2020-10-29 04:13:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:13,874 INFO L225 Difference]: With dead ends: 151 [2020-10-29 04:13:13,874 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 04:13:13,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:13:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 04:13:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2020-10-29 04:13:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-29 04:13:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2020-10-29 04:13:13,897 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 79 [2020-10-29 04:13:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:13,898 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2020-10-29 04:13:13,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:13:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2020-10-29 04:13:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 04:13:13,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:13,899 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:13,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:13:13,900 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:13,900 INFO L82 PathProgramCache]: Analyzing trace with hash 105588893, now seen corresponding path program 20 times [2020-10-29 04:13:13,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:13,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14878972] [2020-10-29 04:13:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:18,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:18,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 04:13:18,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:13:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:13:18,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:18,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:13:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:18,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 04:13:18,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:19,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:19,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:19,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:19,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:13:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:19,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:13:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:19,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:19,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:19,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:19,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:19,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:13:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:19,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:19,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:13:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:19,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:19,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:19,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:19,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:19,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:19,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:19,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:19,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:19,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:19,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 8 proven. 152 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:13:19,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14878972] [2020-10-29 04:13:19,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:19,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:13:19,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684559660] [2020-10-29 04:13:19,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:13:19,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:19,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:13:19,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:13:19,882 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand 23 states. [2020-10-29 04:13:20,692 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-10-29 04:13:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:21,698 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2020-10-29 04:13:21,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:13:21,704 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-10-29 04:13:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:21,705 INFO L225 Difference]: With dead ends: 155 [2020-10-29 04:13:21,706 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 04:13:21,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:13:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 04:13:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2020-10-29 04:13:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-29 04:13:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2020-10-29 04:13:21,730 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 79 [2020-10-29 04:13:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:21,730 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2020-10-29 04:13:21,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:13:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2020-10-29 04:13:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 04:13:21,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:21,732 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:21,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:13:21,733 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:21,733 INFO L82 PathProgramCache]: Analyzing trace with hash -904667871, now seen corresponding path program 21 times [2020-10-29 04:13:21,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:21,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264306096] [2020-10-29 04:13:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:22,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:24,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:26,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:26,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 04:13:26,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 04:13:26,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:13:26,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:26,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:26,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:13:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:26,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 04:13:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:27,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:27,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:13:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:27,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:27,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:27,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:27,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:27,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:13:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:27,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:27,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:27,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:27,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:27,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:27,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:27,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:27,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:27,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:27,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:27,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:13:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:27,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:27,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:27,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:27,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:27,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:27,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:13:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:27,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:27,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:27,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:27,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:27,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 10 proven. 141 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:13:27,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264306096] [2020-10-29 04:13:27,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:27,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:13:27,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723424183] [2020-10-29 04:13:27,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:13:27,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:27,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:13:27,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:13:27,292 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand 20 states. [2020-10-29 04:13:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:29,052 INFO L93 Difference]: Finished difference Result 167 states and 179 transitions. [2020-10-29 04:13:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:13:29,056 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 83 [2020-10-29 04:13:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:29,058 INFO L225 Difference]: With dead ends: 167 [2020-10-29 04:13:29,058 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 04:13:29,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=1136, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 04:13:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 04:13:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 138. [2020-10-29 04:13:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 04:13:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2020-10-29 04:13:29,087 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 83 [2020-10-29 04:13:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:29,088 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2020-10-29 04:13:29,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:13:29,088 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2020-10-29 04:13:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 04:13:29,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:29,089 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:29,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:13:29,090 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:29,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2066618331, now seen corresponding path program 22 times [2020-10-29 04:13:29,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:29,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121448991] [2020-10-29 04:13:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:29,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:29,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:30,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:31,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:31,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:32,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 04:13:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:34,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:34,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 04:13:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:34,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:13:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:34,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:13:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:34,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:13:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:13:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:34,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:13:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:34,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:34,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:34,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:34,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:13:34,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:34,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:13:34,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121448991] [2020-10-29 04:13:34,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:34,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:13:34,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814689941] [2020-10-29 04:13:34,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:13:34,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:13:34,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:13:34,386 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand 17 states. [2020-10-29 04:13:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:35,063 INFO L93 Difference]: Finished difference Result 190 states and 199 transitions. [2020-10-29 04:13:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:13:35,069 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 87 [2020-10-29 04:13:35,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:35,070 INFO L225 Difference]: With dead ends: 190 [2020-10-29 04:13:35,070 INFO L226 Difference]: Without dead ends: 126 [2020-10-29 04:13:35,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:13:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-29 04:13:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2020-10-29 04:13:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 04:13:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2020-10-29 04:13:35,089 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 87 [2020-10-29 04:13:35,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:35,090 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2020-10-29 04:13:35,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:13:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2020-10-29 04:13:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 04:13:35,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:35,091 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:35,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:13:35,092 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:35,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash -220086202, now seen corresponding path program 23 times [2020-10-29 04:13:35,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:35,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939625840] [2020-10-29 04:13:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:36,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:40,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 04:13:40,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:13:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 04:13:40,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:40,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:13:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:40,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 04:13:40,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:40,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:40,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:40,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:40,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:40,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:40,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:40,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:13:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:40,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:40,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:40,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:40,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:40,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:13:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:40,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:13:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:40,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:40,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:40,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:40,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:13:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:40,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:13:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:40,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:40,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:40,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:40,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:40,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:40,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:40,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 11 proven. 169 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:13:40,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939625840] [2020-10-29 04:13:40,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:40,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:13:40,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824813594] [2020-10-29 04:13:40,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:13:40,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:40,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:13:40,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:13:40,857 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand 23 states. [2020-10-29 04:13:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:42,837 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2020-10-29 04:13:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:13:42,838 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 87 [2020-10-29 04:13:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:42,840 INFO L225 Difference]: With dead ends: 171 [2020-10-29 04:13:42,840 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 04:13:42,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 04:13:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 04:13:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 150. [2020-10-29 04:13:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-29 04:13:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2020-10-29 04:13:42,867 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 87 [2020-10-29 04:13:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:42,867 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2020-10-29 04:13:42,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:13:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2020-10-29 04:13:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 04:13:42,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:42,869 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:42,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:13:42,869 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash -20278, now seen corresponding path program 24 times [2020-10-29 04:13:42,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:42,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320381509] [2020-10-29 04:13:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:43,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:47,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:47,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 04:13:47,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:48,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:13:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:48,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:48,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:48,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:48,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:48,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:13:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:48,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:48,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:48,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:48,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:48,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:48,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:48,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:48,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:48,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:48,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:48,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:13:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:48,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:48,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:13:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:48,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:48,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:13:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:48,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 12 proven. 163 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:13:48,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320381509] [2020-10-29 04:13:48,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:48,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:13:48,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723502775] [2020-10-29 04:13:48,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:13:48,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:48,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:13:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:13:48,518 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 21 states. [2020-10-29 04:13:50,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:50,403 INFO L93 Difference]: Finished difference Result 171 states and 185 transitions. [2020-10-29 04:13:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:13:50,404 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 91 [2020-10-29 04:13:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:50,405 INFO L225 Difference]: With dead ends: 171 [2020-10-29 04:13:50,405 INFO L226 Difference]: Without dead ends: 168 [2020-10-29 04:13:50,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=1222, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 04:13:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-29 04:13:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2020-10-29 04:13:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 04:13:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 175 transitions. [2020-10-29 04:13:50,439 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 175 transitions. Word has length 91 [2020-10-29 04:13:50,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:50,439 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 175 transitions. [2020-10-29 04:13:50,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:13:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 175 transitions. [2020-10-29 04:13:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 04:13:50,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:50,441 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:50,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:13:50,441 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:50,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1846511851, now seen corresponding path program 25 times [2020-10-29 04:13:50,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:50,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320135118] [2020-10-29 04:13:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:51,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:52,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:54,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:55,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 04:13:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:13:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:13:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:13:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:13:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:13:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:13:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:13:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:13:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:56,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:13:56,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:13:56,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:13:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:13:56,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:13:56,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:13:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:13:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:13:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:13:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:13:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 11 proven. 202 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:13:56,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320135118] [2020-10-29 04:13:56,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:13:56,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 04:13:56,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630768586] [2020-10-29 04:13:56,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 04:13:56,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:13:56,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 04:13:56,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:13:56,298 INFO L87 Difference]: Start difference. First operand 162 states and 175 transitions. Second operand 24 states. [2020-10-29 04:13:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:13:58,248 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2020-10-29 04:13:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:13:58,249 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 91 [2020-10-29 04:13:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:13:58,254 INFO L225 Difference]: With dead ends: 175 [2020-10-29 04:13:58,254 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 04:13:58,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:13:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 04:13:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 162. [2020-10-29 04:13:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-29 04:13:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 175 transitions. [2020-10-29 04:13:58,280 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 175 transitions. Word has length 91 [2020-10-29 04:13:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:13:58,281 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 175 transitions. [2020-10-29 04:13:58,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 04:13:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 175 transitions. [2020-10-29 04:13:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 04:13:58,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:13:58,283 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:13:58,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 04:13:58,283 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:13:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:13:58,283 INFO L82 PathProgramCache]: Analyzing trace with hash 673095407, now seen corresponding path program 26 times [2020-10-29 04:13:58,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:13:58,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845512510] [2020-10-29 04:13:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:13:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:13:58,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:13:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:03,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:03,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 04:14:03,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:14:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 04:14:03,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:03,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:14:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 04:14:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:03,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:03,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:03,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:03,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:03,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:14:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:03,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:03,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:03,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:03,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:03,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:03,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:14:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:03,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:03,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:03,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:14:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:03,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:03,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:03,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:03,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:03,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:14:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:04,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:04,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:04,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:04,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:04,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:04,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:04,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:14:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:04,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:04,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:04,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:04,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:04,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:04,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 04:14:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:04,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:04,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:04,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:04,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:04,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:04,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:04,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:04,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:04,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:04,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 192 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:14:04,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845512510] [2020-10-29 04:14:04,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:04,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:14:04,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205968201] [2020-10-29 04:14:04,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:14:04,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:04,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:14:04,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:14:04,054 INFO L87 Difference]: Start difference. First operand 162 states and 175 transitions. Second operand 22 states. [2020-10-29 04:14:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:06,308 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2020-10-29 04:14:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 04:14:06,309 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2020-10-29 04:14:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:06,311 INFO L225 Difference]: With dead ends: 187 [2020-10-29 04:14:06,311 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 04:14:06,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:14:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 04:14:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 158. [2020-10-29 04:14:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-29 04:14:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2020-10-29 04:14:06,337 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 95 [2020-10-29 04:14:06,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:06,337 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2020-10-29 04:14:06,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:14:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2020-10-29 04:14:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 04:14:06,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:06,339 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:06,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 04:14:06,339 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:06,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:06,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1670761331, now seen corresponding path program 27 times [2020-10-29 04:14:06,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:06,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282507579] [2020-10-29 04:14:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 04:14:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:14:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:14:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:11,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:14:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:11,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:11,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:14:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:14:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:14:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:14:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:11,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:11,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:11,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:11,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:11,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 04:14:11,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282507579] [2020-10-29 04:14:11,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:11,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 04:14:11,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012403521] [2020-10-29 04:14:11,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 04:14:11,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 04:14:11,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-29 04:14:11,686 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand 19 states. [2020-10-29 04:14:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:12,525 INFO L93 Difference]: Finished difference Result 214 states and 224 transitions. [2020-10-29 04:14:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:14:12,531 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 99 [2020-10-29 04:14:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:12,533 INFO L225 Difference]: With dead ends: 214 [2020-10-29 04:14:12,533 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 04:14:12,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:14:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 04:14:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2020-10-29 04:14:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-29 04:14:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2020-10-29 04:14:12,555 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 99 [2020-10-29 04:14:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:12,555 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2020-10-29 04:14:12,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 04:14:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2020-10-29 04:14:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 04:14:12,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:12,556 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:12,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 04:14:12,557 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:12,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:12,557 INFO L82 PathProgramCache]: Analyzing trace with hash 757068436, now seen corresponding path program 28 times [2020-10-29 04:14:12,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:12,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461138191] [2020-10-29 04:14:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:15,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:17,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:17,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 04:14:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:18,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:18,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:18,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:14:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:18,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:18,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:14:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:18,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:18,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:18,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:14:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:18,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:18,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:18,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:18,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:14:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:18,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:14:18,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:14:18,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:14:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:18,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:18,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:18,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:18,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:14:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:18,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:18,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:18,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:18,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:18,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:18,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:18,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:18,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 12 proven. 225 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 04:14:18,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461138191] [2020-10-29 04:14:18,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:18,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:14:18,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295644711] [2020-10-29 04:14:18,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:14:18,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:18,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:14:18,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:14:18,633 INFO L87 Difference]: Start difference. First operand 132 states and 139 transitions. Second operand 25 states. [2020-10-29 04:14:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:21,113 INFO L93 Difference]: Finished difference Result 154 states and 161 transitions. [2020-10-29 04:14:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 04:14:21,117 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 99 [2020-10-29 04:14:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:21,118 INFO L225 Difference]: With dead ends: 154 [2020-10-29 04:14:21,118 INFO L226 Difference]: Without dead ends: 151 [2020-10-29 04:14:21,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=1775, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 04:14:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-29 04:14:21,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 106. [2020-10-29 04:14:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 04:14:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-10-29 04:14:21,134 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 99 [2020-10-29 04:14:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:21,135 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-10-29 04:14:21,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:14:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-10-29 04:14:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 04:14:21,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:21,136 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:21,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 04:14:21,136 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:21,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1697987432, now seen corresponding path program 29 times [2020-10-29 04:14:21,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:21,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493033770] [2020-10-29 04:14:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 04:14:26,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:14:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 04:14:26,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:14:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:26,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 04:14:26,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:14:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:14:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:26,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:26,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:26,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:14:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:14:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:26,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:26,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:26,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:14:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:26,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:14:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 04:14:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:26,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:14:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:26,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:26,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:26,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:26,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:26,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:26,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 14 proven. 218 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 04:14:27,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493033770] [2020-10-29 04:14:27,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:27,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:14:27,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876572324] [2020-10-29 04:14:27,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:14:27,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:14:27,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:14:27,012 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 23 states. [2020-10-29 04:14:29,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:29,509 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2020-10-29 04:14:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:14:29,510 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 103 [2020-10-29 04:14:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:29,512 INFO L225 Difference]: With dead ends: 162 [2020-10-29 04:14:29,512 INFO L226 Difference]: Without dead ends: 159 [2020-10-29 04:14:29,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=125, Invalid=1597, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 04:14:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-29 04:14:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2020-10-29 04:14:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-29 04:14:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2020-10-29 04:14:29,543 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 103 [2020-10-29 04:14:29,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:29,543 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2020-10-29 04:14:29,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:14:29,544 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2020-10-29 04:14:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 04:14:29,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:29,547 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:29,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 04:14:29,547 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:29,547 INFO L82 PathProgramCache]: Analyzing trace with hash -823876803, now seen corresponding path program 30 times [2020-10-29 04:14:29,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:29,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656355827] [2020-10-29 04:14:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:30,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:33,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:34,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:34,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 04:14:34,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:14:34,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 04:14:34,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:34,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:14:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:34,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 04:14:34,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:14:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:35,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:14:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:35,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:35,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:14:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:35,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:35,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:14:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:35,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:14:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:35,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:35,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:14:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:35,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:35,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 04:14:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:35,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:35,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:35,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:35,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:35,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:35,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 14 proven. 251 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 04:14:35,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656355827] [2020-10-29 04:14:35,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:35,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 04:14:35,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356790855] [2020-10-29 04:14:35,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 04:14:35,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:35,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 04:14:35,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:14:35,565 INFO L87 Difference]: Start difference. First operand 148 states and 157 transitions. Second operand 24 states. [2020-10-29 04:14:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:38,274 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2020-10-29 04:14:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:14:38,275 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 107 [2020-10-29 04:14:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:38,278 INFO L225 Difference]: With dead ends: 199 [2020-10-29 04:14:38,278 INFO L226 Difference]: Without dead ends: 196 [2020-10-29 04:14:38,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 04:14:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-29 04:14:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 152. [2020-10-29 04:14:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-29 04:14:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2020-10-29 04:14:38,303 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 107 [2020-10-29 04:14:38,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:38,304 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2020-10-29 04:14:38,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 04:14:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2020-10-29 04:14:38,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 04:14:38,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:38,305 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:38,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 04:14:38,305 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:38,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1722757441, now seen corresponding path program 31 times [2020-10-29 04:14:38,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:38,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808965774] [2020-10-29 04:14:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:42,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 04:14:43,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:14:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 04:14:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:14:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 04:14:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 04:14:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:14:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:14:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:43,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:14:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:14:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:43,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 04:14:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:43,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:14:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:43,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 04:14:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 04:14:43,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808965774] [2020-10-29 04:14:43,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:43,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:14:43,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223082723] [2020-10-29 04:14:43,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:14:43,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:43,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:14:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:14:43,792 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 21 states. [2020-10-29 04:14:44,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:44,749 INFO L93 Difference]: Finished difference Result 238 states and 249 transitions. [2020-10-29 04:14:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 04:14:44,750 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-10-29 04:14:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:44,752 INFO L225 Difference]: With dead ends: 238 [2020-10-29 04:14:44,752 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 04:14:44,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:14:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 04:14:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2020-10-29 04:14:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-29 04:14:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2020-10-29 04:14:44,776 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 111 [2020-10-29 04:14:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:44,776 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2020-10-29 04:14:44,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:14:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2020-10-29 04:14:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 04:14:44,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:44,778 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:44,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 04:14:44,778 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:44,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1879791774, now seen corresponding path program 32 times [2020-10-29 04:14:44,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:44,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480770360] [2020-10-29 04:14:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:49,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:49,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 04:14:49,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:14:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:14:49,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:49,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 04:14:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 04:14:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:14:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:50,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:50,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:14:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:50,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:50,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:14:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:14:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:50,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:50,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:50,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 04:14:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:50,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:50,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:50,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:14:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 04:14:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:50,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:50,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 15 proven. 287 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 04:14:50,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480770360] [2020-10-29 04:14:50,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:50,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 04:14:50,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008916567] [2020-10-29 04:14:50,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 04:14:50,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:50,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 04:14:50,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:14:50,783 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand 27 states. [2020-10-29 04:14:53,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:14:53,766 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2020-10-29 04:14:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 04:14:53,767 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 111 [2020-10-29 04:14:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:14:53,768 INFO L225 Difference]: With dead ends: 207 [2020-10-29 04:14:53,768 INFO L226 Difference]: Without dead ends: 204 [2020-10-29 04:14:53,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=185, Invalid=1977, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 04:14:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-29 04:14:53,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 156. [2020-10-29 04:14:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 04:14:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2020-10-29 04:14:53,792 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 111 [2020-10-29 04:14:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:14:53,792 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2020-10-29 04:14:53,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 04:14:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2020-10-29 04:14:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 04:14:53,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:14:53,793 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:14:53,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 04:14:53,794 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:14:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:14:53,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1512479462, now seen corresponding path program 33 times [2020-10-29 04:14:53,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:14:53,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003102683] [2020-10-29 04:14:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:14:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:53,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:58,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:58,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 04:14:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-29 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 04:14:58,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:14:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:14:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:59,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:14:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:14:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:14:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:14:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:14:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:14:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:59,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:14:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:59,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:14:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 04:14:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 04:14:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:14:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:14:59,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:14:59,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:14:59,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:14:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 16 proven. 281 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 04:14:59,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003102683] [2020-10-29 04:14:59,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:14:59,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:14:59,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050564125] [2020-10-29 04:14:59,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:14:59,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:14:59,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:14:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:14:59,814 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand 25 states. [2020-10-29 04:15:02,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:02,754 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2020-10-29 04:15:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 04:15:02,756 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 115 [2020-10-29 04:15:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:02,758 INFO L225 Difference]: With dead ends: 207 [2020-10-29 04:15:02,758 INFO L226 Difference]: Without dead ends: 204 [2020-10-29 04:15:02,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=142, Invalid=2020, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 04:15:02,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-29 04:15:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2020-10-29 04:15:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 04:15:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2020-10-29 04:15:02,793 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 115 [2020-10-29 04:15:02,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:02,793 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2020-10-29 04:15:02,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:15:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2020-10-29 04:15:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 04:15:02,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:02,795 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:02,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 04:15:02,795 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:02,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2090069753, now seen corresponding path program 34 times [2020-10-29 04:15:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:02,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336090556] [2020-10-29 04:15:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:03,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:05,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:07,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:07,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 04:15:07,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:15:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:15:07,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:07,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 04:15:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 04:15:07,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 04:15:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:08,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:15:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 04:15:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:15:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-29 04:15:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:08,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:08,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:08,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 04:15:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:08,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:08,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 04:15:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:08,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:08,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:08,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 15 proven. 328 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 04:15:08,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336090556] [2020-10-29 04:15:08,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:08,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 04:15:08,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565666436] [2020-10-29 04:15:08,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 04:15:08,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:08,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 04:15:08,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:15:08,956 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand 28 states. [2020-10-29 04:15:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:15:11,894 INFO L93 Difference]: Finished difference Result 211 states and 229 transitions. [2020-10-29 04:15:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:15:11,895 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 115 [2020-10-29 04:15:11,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:15:11,896 INFO L225 Difference]: With dead ends: 211 [2020-10-29 04:15:11,896 INFO L226 Difference]: Without dead ends: 208 [2020-10-29 04:15:11,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=175, Invalid=1895, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 04:15:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-29 04:15:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2020-10-29 04:15:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-29 04:15:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2020-10-29 04:15:11,928 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 115 [2020-10-29 04:15:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:15:11,928 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2020-10-29 04:15:11,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 04:15:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2020-10-29 04:15:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 04:15:11,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:15:11,929 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:15:11,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 04:15:11,929 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:15:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:15:11,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1965643253, now seen corresponding path program 35 times [2020-10-29 04:15:11,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:15:11,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385102726] [2020-10-29 04:15:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:15:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:16,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 04:15:16,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:15:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:15:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:16,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:15:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:15:16,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 04:15:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:15:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:15:17,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:17,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:15:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:15:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 04:15:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:17,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:15:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:17,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 04:15:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:15:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:17,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 04:15:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:15:17,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:15:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:15:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 04:15:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-29 04:15:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:15:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:15:17,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:15:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:15:17,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:15:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:15:17,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:15:17,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:15:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:15:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:15:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:15:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:15:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 16 proven. 318 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 04:15:17,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385102726] [2020-10-29 04:15:17,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:15:17,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 04:15:17,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672233364] [2020-10-29 04:15:17,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 04:15:17,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:15:17,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 04:15:17,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:15:17,962 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand 26 states.