/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-cav19/array_init_both_ends_multiple_sum.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:15:18,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:15:18,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:15:18,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:15:18,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:15:18,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:15:18,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:15:18,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:15:18,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:15:18,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:15:18,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:15:18,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:15:18,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:15:18,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:15:18,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:15:18,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:15:18,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:15:18,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:15:18,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:15:18,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:15:18,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:15:18,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:15:18,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:15:18,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:15:18,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:15:18,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:15:18,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:15:18,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:15:18,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:15:18,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:15:18,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:15:18,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:15:18,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:15:18,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:15:18,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:15:18,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:15:18,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:15:18,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:15:18,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:15:18,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:15:18,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:15:18,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:15:18,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:15:18,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:15:18,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:15:18,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:15:18,512 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:15:18,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:15:18,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:15:18,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:15:18,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:15:18,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:15:18,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:15:18,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:15:18,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:15:18,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:15:18,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:15:18,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:15:18,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:15:18,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:15:18,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:15:18,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:15:18,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:15:18,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:15:18,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:15:18,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:15:18,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:15:18,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:15:19,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:15:19,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:15:19,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:15:19,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:15:19,073 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:15:19,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_both_ends_multiple_sum.c [2020-10-29 03:15:19,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2496720/c695758aa9714170b266b58a8b7aac70/FLAGed41dbbd0 [2020-10-29 03:15:19,675 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:15:19,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_both_ends_multiple_sum.c [2020-10-29 03:15:19,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2496720/c695758aa9714170b266b58a8b7aac70/FLAGed41dbbd0 [2020-10-29 03:15:20,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2496720/c695758aa9714170b266b58a8b7aac70 [2020-10-29 03:15:20,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:15:20,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:15:20,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:15:20,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:15:20,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22af7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20, skipping insertion in model container [2020-10-29 03:15:20,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:15:20,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:15:20,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,384 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:15:20,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,434 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:15:20,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20 WrapperNode [2020-10-29 03:15:20,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:15:20,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:15:20,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:15:20,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:15:20,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:15:20,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:15:20,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:15:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:15:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:15:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:15:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:15:20,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:15:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:15:20,617 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:15:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:15:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:15:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:15:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:15:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:15:20,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:15:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:15:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:15:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:15:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:15:20,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:15:20,947 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:15:20,947 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:15:20,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:20 BoogieIcfgContainer [2020-10-29 03:15:20,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:15:20,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:15:20,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:15:20,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:15:20,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:15:20" (1/3) ... [2020-10-29 03:15:20,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339dfd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:20, skipping insertion in model container [2020-10-29 03:15:20,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (2/3) ... [2020-10-29 03:15:20,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339dfd59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:20, skipping insertion in model container [2020-10-29 03:15:20,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:20" (3/3) ... [2020-10-29 03:15:20,960 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_both_ends_multiple_sum.c [2020-10-29 03:15:20,974 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:15:20,979 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:15:20,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:15:21,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:15:21,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:15:21,023 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:15:21,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:15:21,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:15:21,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:15:21,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:15:21,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:15:21,054 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-29 03:15:21,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 03:15:21,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:21,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:21,065 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:21,072 INFO L82 PathProgramCache]: Analyzing trace with hash 661726964, now seen corresponding path program 1 times [2020-10-29 03:15:21,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:21,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428074845] [2020-10-29 03:15:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:15:22,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:15:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-29 03:15:22,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:15:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:15:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:15:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:22,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 03:15:22,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:22,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428074845] [2020-10-29 03:15:22,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:15:22,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:15:22,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981530485] [2020-10-29 03:15:22,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:15:22,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:22,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:15:22,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:15:22,471 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-10-29 03:15:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:22,689 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2020-10-29 03:15:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:15:22,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-29 03:15:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:22,700 INFO L225 Difference]: With dead ends: 55 [2020-10-29 03:15:22,700 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 03:15:22,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 03:15:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-10-29 03:15:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 03:15:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-29 03:15:22,752 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 16 [2020-10-29 03:15:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:22,752 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-29 03:15:22,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:15:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-29 03:15:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:15:22,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:22,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:22,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:15:22,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:22,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash 66704614, now seen corresponding path program 1 times [2020-10-29 03:15:22,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:22,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039090840] [2020-10-29 03:15:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:26,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:15:26,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:15:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3372 [2020-10-29 03:15:26,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:26,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:15:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:26,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:15:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:26,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:26,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 03:15:26,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:26,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:15:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:15:26,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039090840] [2020-10-29 03:15:26,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:26,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:15:26,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379928548] [2020-10-29 03:15:26,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:15:26,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:26,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:15:26,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:26,327 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-10-29 03:15:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:26,596 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-10-29 03:15:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:15:26,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-29 03:15:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:26,598 INFO L225 Difference]: With dead ends: 46 [2020-10-29 03:15:26,598 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:15:26,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:15:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:15:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-29 03:15:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:15:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-29 03:15:26,609 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-10-29 03:15:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:26,609 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-29 03:15:26,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:15:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-29 03:15:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:15:26,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:26,611 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] [2020-10-29 03:15:26,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:15:26,611 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:26,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:26,612 INFO L82 PathProgramCache]: Analyzing trace with hash -405168308, now seen corresponding path program 2 times [2020-10-29 03:15:26,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:26,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041379032] [2020-10-29 03:15:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:26,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:31,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:15:31,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:15:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:15:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:31,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:15:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:15:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:15:32,028 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2020-10-29 03:15:32,366 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-29 03:15:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:32,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:32,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:32,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:15:32,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:32,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:32,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041379032] [2020-10-29 03:15:32,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:32,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:15:32,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980786489] [2020-10-29 03:15:32,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:15:32,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:32,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:15:32,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:32,791 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 17 states. [2020-10-29 03:15:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:33,991 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-29 03:15:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:15:33,992 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2020-10-29 03:15:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:33,994 INFO L225 Difference]: With dead ends: 39 [2020-10-29 03:15:33,994 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 03:15:33,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:15:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 03:15:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-29 03:15:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:15:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-29 03:15:34,005 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2020-10-29 03:15:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:34,006 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-29 03:15:34,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:15:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-29 03:15:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:15:34,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:34,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:34,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:15:34,008 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:34,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1277064366, now seen corresponding path program 3 times [2020-10-29 03:15:34,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:34,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158057873] [2020-10-29 03:15:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:34,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:15:39,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:15:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:15:39,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:15:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:15:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:39,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 03:15:39,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:15:39,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158057873] [2020-10-29 03:15:39,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:39,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:15:39,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260508451] [2020-10-29 03:15:39,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:15:39,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:15:39,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:15:39,219 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 8 states. [2020-10-29 03:15:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:39,513 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-10-29 03:15:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:15:39,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-29 03:15:39,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:39,515 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:15:39,515 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:15:39,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:15:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:15:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-29 03:15:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:15:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-29 03:15:39,534 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 30 [2020-10-29 03:15:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:39,535 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-29 03:15:39,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:15:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-29 03:15:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:15:39,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:39,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:39,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:15:39,538 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:39,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1711298920, now seen corresponding path program 4 times [2020-10-29 03:15:39,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:39,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429213785] [2020-10-29 03:15:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:15:44,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:15:44,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:15:44,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:15:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:44,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:15:44,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:44,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:44,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-29 03:15:44,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429213785] [2020-10-29 03:15:44,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:44,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:15:44,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990620556] [2020-10-29 03:15:44,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:15:44,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:44,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:15:44,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:15:44,715 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2020-10-29 03:15:45,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:45,031 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-10-29 03:15:45,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:15:45,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-29 03:15:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:45,033 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:15:45,033 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:15:45,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:15:45,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:15:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-29 03:15:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:15:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-29 03:15:45,055 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 40 [2020-10-29 03:15:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:45,055 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-29 03:15:45,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:15:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-29 03:15:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:15:45,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:45,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:45,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:15:45,061 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1494703234, now seen corresponding path program 5 times [2020-10-29 03:15:45,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:45,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428932049] [2020-10-29 03:15:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:50,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:50,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:15:50,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:15:50,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:50,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:15:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:15:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:50,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:50,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:50,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:15:50,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:50,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:50,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-29 03:15:50,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428932049] [2020-10-29 03:15:50,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:50,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:15:50,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230519304] [2020-10-29 03:15:50,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:15:50,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:15:50,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:15:50,234 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 10 states. [2020-10-29 03:15:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:50,703 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2020-10-29 03:15:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:15:50,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-29 03:15:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:50,705 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:15:50,705 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:15:50,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:15:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-29 03:15:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:15:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-29 03:15:50,724 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 46 [2020-10-29 03:15:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:50,724 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-29 03:15:50,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:15:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-29 03:15:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:15:50,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:50,731 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:50,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:15:50,732 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:50,733 INFO L82 PathProgramCache]: Analyzing trace with hash -890627100, now seen corresponding path program 6 times [2020-10-29 03:15:50,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:50,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836237236] [2020-10-29 03:15:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:50,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:55,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:15:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:15:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:55,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:55,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:55,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:15:55,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:55,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 03:15:55,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836237236] [2020-10-29 03:15:55,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:55,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:15:55,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240039914] [2020-10-29 03:15:55,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:15:55,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:55,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:15:55,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:15:55,958 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 11 states. [2020-10-29 03:15:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:56,419 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2020-10-29 03:15:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:15:56,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-29 03:15:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:56,421 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:15:56,421 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:15:56,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:15:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:15:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-10-29 03:15:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:15:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-29 03:15:56,434 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 52 [2020-10-29 03:15:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:56,434 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-29 03:15:56,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:15:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-29 03:15:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:15:56,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:56,436 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:56,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:15:56,436 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:56,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1048670154, now seen corresponding path program 7 times [2020-10-29 03:15:56,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:56,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445943052] [2020-10-29 03:15:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:56,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:01,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:01,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:16:01,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:01,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:01,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:01,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:16:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:01,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-29 03:16:01,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445943052] [2020-10-29 03:16:01,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:01,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:16:01,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417385926] [2020-10-29 03:16:01,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:16:01,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:01,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:16:01,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:16:01,653 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 12 states. [2020-10-29 03:16:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:02,100 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2020-10-29 03:16:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:16:02,101 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-29 03:16:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:02,102 INFO L225 Difference]: With dead ends: 106 [2020-10-29 03:16:02,102 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:16:02,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:16:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:16:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-29 03:16:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:16:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-29 03:16:02,128 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 58 [2020-10-29 03:16:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:02,129 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-29 03:16:02,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:16:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-29 03:16:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:16:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:02,134 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:02,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:16:02,135 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:02,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1465647312, now seen corresponding path program 8 times [2020-10-29 03:16:02,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:02,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272596433] [2020-10-29 03:16:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:07,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:07,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:16:07,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:16:07,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:07,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:16:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:07,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:16:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:07,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:07,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:07,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:16:07,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:07,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:07,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-29 03:16:07,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272596433] [2020-10-29 03:16:07,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:07,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:16:07,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25785544] [2020-10-29 03:16:07,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:16:07,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:16:07,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:16:07,389 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 13 states. [2020-10-29 03:16:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:07,816 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2020-10-29 03:16:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:16:07,817 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2020-10-29 03:16:07,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:07,819 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:16:07,819 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:16:07,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:16:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:16:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-29 03:16:07,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:16:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-29 03:16:07,832 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 64 [2020-10-29 03:16:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:07,832 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-29 03:16:07,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:16:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-29 03:16:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:16:07,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:07,834 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:07,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:16:07,834 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash -457233898, now seen corresponding path program 9 times [2020-10-29 03:16:07,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:07,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670555574] [2020-10-29 03:16:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:07,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:12,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:12,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:16:12,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:16:12,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:12,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:16:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:12,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:16:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:13,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:13,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:13,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:13,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:13,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:13,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:13,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-29 03:16:13,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670555574] [2020-10-29 03:16:13,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:13,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:16:13,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454118784] [2020-10-29 03:16:13,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:16:13,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:13,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:16:13,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:16:13,088 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 14 states. [2020-10-29 03:16:13,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:13,504 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2020-10-29 03:16:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:16:13,505 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-29 03:16:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:13,506 INFO L225 Difference]: With dead ends: 126 [2020-10-29 03:16:13,506 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:16:13,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:16:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:16:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-10-29 03:16:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:16:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-29 03:16:13,534 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 70 [2020-10-29 03:16:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:13,534 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-29 03:16:13,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:16:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-29 03:16:13,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:16:13,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:13,541 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:13,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:16:13,544 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:13,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1220038780, now seen corresponding path program 10 times [2020-10-29 03:16:13,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:13,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596450040] [2020-10-29 03:16:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:18,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:16:18,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:18,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:18,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:18,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:16:18,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:18,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-10-29 03:16:18,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596450040] [2020-10-29 03:16:18,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:18,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:16:18,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652084157] [2020-10-29 03:16:18,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:16:18,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:18,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:16:18,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:16:18,826 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 15 states. [2020-10-29 03:16:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:19,378 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2020-10-29 03:16:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:16:19,378 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-10-29 03:16:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:19,380 INFO L225 Difference]: With dead ends: 136 [2020-10-29 03:16:19,380 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:16:19,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:16:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:16:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-10-29 03:16:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:16:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-29 03:16:19,394 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 76 [2020-10-29 03:16:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:19,394 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-29 03:16:19,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:16:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-29 03:16:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:16:19,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:19,396 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:19,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:16:19,396 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:19,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:19,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1793905250, now seen corresponding path program 11 times [2020-10-29 03:16:19,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:19,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120792994] [2020-10-29 03:16:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:24,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:16:24,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:16:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-10-29 03:16:24,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120792994] [2020-10-29 03:16:24,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:24,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:16:24,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121934401] [2020-10-29 03:16:24,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:16:24,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:24,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:16:24,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:16:24,776 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 16 states. [2020-10-29 03:16:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:25,416 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-10-29 03:16:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:16:25,417 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-29 03:16:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:25,418 INFO L225 Difference]: With dead ends: 146 [2020-10-29 03:16:25,418 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:16:25,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:16:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:16:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2020-10-29 03:16:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:16:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-29 03:16:25,448 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 82 [2020-10-29 03:16:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:25,449 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-29 03:16:25,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:16:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-29 03:16:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:16:25,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:25,453 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:25,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:16:25,454 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:25,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1748111304, now seen corresponding path program 12 times [2020-10-29 03:16:25,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:25,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417420074] [2020-10-29 03:16:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:30,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:30,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:16:30,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:16:30,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:16:30,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:30,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:16:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 03:16:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:30,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:30,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:30,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:30,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:16:30,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:30,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-29 03:16:30,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417420074] [2020-10-29 03:16:30,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:30,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:16:30,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400082484] [2020-10-29 03:16:30,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:16:30,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:30,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:16:30,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:16:30,792 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 17 states. [2020-10-29 03:16:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:31,402 INFO L93 Difference]: Finished difference Result 156 states and 162 transitions. [2020-10-29 03:16:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:16:31,403 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-10-29 03:16:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:31,404 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:16:31,404 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:16:31,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:16:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:16:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-10-29 03:16:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:16:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-29 03:16:31,416 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 88 [2020-10-29 03:16:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:31,416 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-29 03:16:31,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:16:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-29 03:16:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 03:16:31,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:31,418 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:31,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:16:31,418 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1445631826, now seen corresponding path program 13 times [2020-10-29 03:16:31,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:31,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457989214] [2020-10-29 03:16:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:36,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:36,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:16:36,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:16:36,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 03:16:36,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:36,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:36,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:16:36,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:36,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:16:36,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:36,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:36,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:36,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-10-29 03:16:36,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457989214] [2020-10-29 03:16:36,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:36,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:16:36,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506050741] [2020-10-29 03:16:36,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:16:36,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:36,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:16:36,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:16:36,845 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 18 states. [2020-10-29 03:16:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:37,534 INFO L93 Difference]: Finished difference Result 166 states and 172 transitions. [2020-10-29 03:16:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:16:37,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-29 03:16:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:37,537 INFO L225 Difference]: With dead ends: 166 [2020-10-29 03:16:37,537 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:16:37,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:16:37,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:16:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2020-10-29 03:16:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 03:16:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-29 03:16:37,549 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 94 [2020-10-29 03:16:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:37,550 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-29 03:16:37,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:16:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-29 03:16:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 03:16:37,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:37,551 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:37,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:16:37,551 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:37,552 INFO L82 PathProgramCache]: Analyzing trace with hash 731659540, now seen corresponding path program 14 times [2020-10-29 03:16:37,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:37,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231788725] [2020-10-29 03:16:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:37,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:42,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:42,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 03:16:42,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:16:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:16:42,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:42,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:16:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:42,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:16:42,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:42,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:42,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:42,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:42,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:16:42,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:42,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:42,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:42,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-29 03:16:42,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231788725] [2020-10-29 03:16:42,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:42,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:16:42,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793451545] [2020-10-29 03:16:42,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:16:42,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:42,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:16:42,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:16:42,933 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 19 states. [2020-10-29 03:16:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:43,708 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2020-10-29 03:16:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:16:43,709 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-29 03:16:43,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:43,710 INFO L225 Difference]: With dead ends: 176 [2020-10-29 03:16:43,710 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:16:43,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=776, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:16:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:16:43,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2020-10-29 03:16:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:16:43,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-29 03:16:43,721 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 100 [2020-10-29 03:16:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:43,721 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-29 03:16:43,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:16:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-29 03:16:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 03:16:43,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:43,723 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:43,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:16:43,723 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:43,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:43,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1103359226, now seen corresponding path program 15 times [2020-10-29 03:16:43,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:43,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601464456] [2020-10-29 03:16:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:43,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:48,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:48,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 03:16:48,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:16:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 03:16:48,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:48,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:16:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:16:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:49,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:49,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:49,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:49,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-10-29 03:16:49,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601464456] [2020-10-29 03:16:49,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:49,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:16:49,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333806802] [2020-10-29 03:16:49,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:16:49,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:49,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:16:49,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:16:49,183 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 20 states. [2020-10-29 03:16:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:50,018 INFO L93 Difference]: Finished difference Result 186 states and 192 transitions. [2020-10-29 03:16:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:16:50,019 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 106 [2020-10-29 03:16:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:50,020 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:16:50,020 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:16:50,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:16:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:16:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2020-10-29 03:16:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:16:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-29 03:16:50,031 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 106 [2020-10-29 03:16:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:50,031 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-29 03:16:50,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:16:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-29 03:16:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 03:16:50,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:50,033 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:50,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:16:50,033 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash -553527200, now seen corresponding path program 16 times [2020-10-29 03:16:50,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:50,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023689026] [2020-10-29 03:16:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:55,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:55,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 03:16:55,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:16:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:16:55,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:55,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:16:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:16:55,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:16:55,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:55,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:55,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:55,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:55,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:16:55,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:55,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:55,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:16:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-10-29 03:16:55,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023689026] [2020-10-29 03:16:55,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:55,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:16:55,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595623457] [2020-10-29 03:16:55,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:16:55,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:55,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:16:55,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:16:55,487 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 21 states. [2020-10-29 03:16:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:56,384 INFO L93 Difference]: Finished difference Result 196 states and 202 transitions. [2020-10-29 03:16:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:16:56,385 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2020-10-29 03:16:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:56,387 INFO L225 Difference]: With dead ends: 196 [2020-10-29 03:16:56,387 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:16:56,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:16:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:16:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2020-10-29 03:16:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-29 03:16:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-29 03:16:56,398 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 112 [2020-10-29 03:16:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:56,399 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-29 03:16:56,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:16:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-29 03:16:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 03:16:56,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:56,400 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:56,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:16:56,401 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:56,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1518559046, now seen corresponding path program 17 times [2020-10-29 03:16:56,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:56,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304522804] [2020-10-29 03:16:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:56,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 03:17:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-10-29 03:17:01,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304522804] [2020-10-29 03:17:01,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:01,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:17:01,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808605062] [2020-10-29 03:17:01,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:17:01,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:17:01,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:17:01,925 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 22 states. [2020-10-29 03:17:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:02,875 INFO L93 Difference]: Finished difference Result 206 states and 212 transitions. [2020-10-29 03:17:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:17:02,876 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2020-10-29 03:17:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:02,878 INFO L225 Difference]: With dead ends: 206 [2020-10-29 03:17:02,878 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:17:02,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=576, Invalid=1064, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:17:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:17:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2020-10-29 03:17:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-29 03:17:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-29 03:17:02,890 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 118 [2020-10-29 03:17:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:02,890 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-29 03:17:02,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:17:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-29 03:17:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 03:17:02,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:02,892 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:02,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:17:02,892 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:02,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1242701396, now seen corresponding path program 18 times [2020-10-29 03:17:02,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:02,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355585510] [2020-10-29 03:17:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:17:08,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 03:17:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:08,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-29 03:17:08,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355585510] [2020-10-29 03:17:08,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:08,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:17:08,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259796691] [2020-10-29 03:17:08,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:17:08,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:08,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:17:08,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:17:08,503 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 23 states. [2020-10-29 03:17:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:09,436 INFO L93 Difference]: Finished difference Result 216 states and 222 transitions. [2020-10-29 03:17:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:17:09,437 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 124 [2020-10-29 03:17:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:09,438 INFO L225 Difference]: With dead ends: 216 [2020-10-29 03:17:09,438 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:17:09,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=636, Invalid=1170, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:17:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:17:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-29 03:17:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:17:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-29 03:17:09,450 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 124 [2020-10-29 03:17:09,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:09,451 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-29 03:17:09,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:17:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-29 03:17:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 03:17:09,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:09,452 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:09,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:17:09,453 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:09,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1667153810, now seen corresponding path program 19 times [2020-10-29 03:17:09,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:09,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206009549] [2020-10-29 03:17:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:14,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 03:17:14,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:14,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:14,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-10-29 03:17:15,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206009549] [2020-10-29 03:17:15,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:15,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:17:15,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141149798] [2020-10-29 03:17:15,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:17:15,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:15,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:17:15,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:17:15,005 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 24 states. [2020-10-29 03:17:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:16,086 INFO L93 Difference]: Finished difference Result 226 states and 232 transitions. [2020-10-29 03:17:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:17:16,087 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 130 [2020-10-29 03:17:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:16,088 INFO L225 Difference]: With dead ends: 226 [2020-10-29 03:17:16,088 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:17:16,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=699, Invalid=1281, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:17:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:17:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 137. [2020-10-29 03:17:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:17:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-10-29 03:17:16,099 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 130 [2020-10-29 03:17:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:16,100 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-10-29 03:17:16,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:17:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-10-29 03:17:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 03:17:16,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:16,101 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:16,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:17:16,102 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1955899144, now seen corresponding path program 20 times [2020-10-29 03:17:16,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:16,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130477613] [2020-10-29 03:17:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:17:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 03:17:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:21,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:21,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:21,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-10-29 03:17:21,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130477613] [2020-10-29 03:17:21,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:21,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:17:21,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870533863] [2020-10-29 03:17:21,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:17:21,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:21,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:17:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=343, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:17:21,723 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 25 states. [2020-10-29 03:17:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:22,875 INFO L93 Difference]: Finished difference Result 236 states and 242 transitions. [2020-10-29 03:17:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:17:22,876 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 136 [2020-10-29 03:17:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:22,878 INFO L225 Difference]: With dead ends: 236 [2020-10-29 03:17:22,878 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:17:22,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=765, Invalid=1397, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:17:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:17:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2020-10-29 03:17:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-29 03:17:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-10-29 03:17:22,889 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 136 [2020-10-29 03:17:22,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:22,889 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-10-29 03:17:22,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:17:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-10-29 03:17:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 03:17:22,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:22,891 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:22,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:17:22,891 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash -752808482, now seen corresponding path program 21 times [2020-10-29 03:17:22,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:22,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137132906] [2020-10-29 03:17:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:22,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 03:17:28,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:28,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 03:17:28,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:17:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 03:17:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-10-29 03:17:28,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137132906] [2020-10-29 03:17:28,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:28,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:17:28,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106010796] [2020-10-29 03:17:28,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:17:28,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:28,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:17:28,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=370, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:17:28,585 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 26 states. [2020-10-29 03:17:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:29,705 INFO L93 Difference]: Finished difference Result 246 states and 252 transitions. [2020-10-29 03:17:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:17:29,707 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 142 [2020-10-29 03:17:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:29,709 INFO L225 Difference]: With dead ends: 246 [2020-10-29 03:17:29,709 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:17:29,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=834, Invalid=1518, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:17:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:17:29,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2020-10-29 03:17:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:17:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2020-10-29 03:17:29,720 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 142 [2020-10-29 03:17:29,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:29,720 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2020-10-29 03:17:29,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:17:29,720 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2020-10-29 03:17:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 03:17:29,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:29,722 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:29,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:17:29,722 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:29,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:29,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1576714684, now seen corresponding path program 22 times [2020-10-29 03:17:29,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:29,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847870417] [2020-10-29 03:17:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5202 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 03:17:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:35,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:35,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:35,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:35,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:35,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:17:35,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:35,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:35,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:35,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:35,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-10-29 03:17:35,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847870417] [2020-10-29 03:17:35,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:35,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:17:35,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624025187] [2020-10-29 03:17:35,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:17:35,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:35,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:17:35,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=398, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:17:35,587 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 27 states. [2020-10-29 03:17:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:36,902 INFO L93 Difference]: Finished difference Result 256 states and 262 transitions. [2020-10-29 03:17:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:17:36,904 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 148 [2020-10-29 03:17:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:36,905 INFO L225 Difference]: With dead ends: 256 [2020-10-29 03:17:36,905 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 03:17:36,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=906, Invalid=1644, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:17:36,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 03:17:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2020-10-29 03:17:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-29 03:17:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2020-10-29 03:17:36,916 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 148 [2020-10-29 03:17:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:36,917 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2020-10-29 03:17:36,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:17:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2020-10-29 03:17:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 03:17:36,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:36,918 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:36,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:17:36,918 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:36,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:36,919 INFO L82 PathProgramCache]: Analyzing trace with hash -401257942, now seen corresponding path program 23 times [2020-10-29 03:17:36,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:36,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189369720] [2020-10-29 03:17:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:42,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:42,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 03:17:42,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:42,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-29 03:17:42,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:42,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:17:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:42,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 03:17:42,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:42,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:42,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:42,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:42,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:42,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:42,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-10-29 03:17:42,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189369720] [2020-10-29 03:17:42,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:42,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:17:42,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960159549] [2020-10-29 03:17:42,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:17:42,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:17:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=426, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:17:42,693 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 28 states. [2020-10-29 03:17:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:44,087 INFO L93 Difference]: Finished difference Result 266 states and 272 transitions. [2020-10-29 03:17:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:17:44,088 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-10-29 03:17:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:44,090 INFO L225 Difference]: With dead ends: 266 [2020-10-29 03:17:44,090 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 03:17:44,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=955, Invalid=1697, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:17:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 03:17:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2020-10-29 03:17:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-29 03:17:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2020-10-29 03:17:44,107 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 154 [2020-10-29 03:17:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:44,107 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2020-10-29 03:17:44,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:17:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2020-10-29 03:17:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-29 03:17:44,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:44,109 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:44,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:17:44,109 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:44,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1673957776, now seen corresponding path program 24 times [2020-10-29 03:17:44,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:44,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617755193] [2020-10-29 03:17:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 03:17:49,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:49,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 03:17:49,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:17:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 03:17:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:49,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:49,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:49,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-29 03:17:49,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617755193] [2020-10-29 03:17:49,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:49,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:17:49,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703150134] [2020-10-29 03:17:49,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:17:49,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:49,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:17:49,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:17:49,943 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 29 states. [2020-10-29 03:17:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:51,427 INFO L93 Difference]: Finished difference Result 276 states and 282 transitions. [2020-10-29 03:17:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:17:51,428 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 160 [2020-10-29 03:17:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:51,429 INFO L225 Difference]: With dead ends: 276 [2020-10-29 03:17:51,430 INFO L226 Difference]: Without dead ends: 170 [2020-10-29 03:17:51,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1059, Invalid=1911, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:17:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-29 03:17:51,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-29 03:17:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 03:17:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2020-10-29 03:17:51,441 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 160 [2020-10-29 03:17:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:51,441 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2020-10-29 03:17:51,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:17:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2020-10-29 03:17:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-29 03:17:51,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:51,443 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:51,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:17:51,443 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:51,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1745253494, now seen corresponding path program 25 times [2020-10-29 03:17:51,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:51,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021476727] [2020-10-29 03:17:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:56,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 03:17:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:57,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:57,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:57,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:57,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:57,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:17:57,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-10-29 03:17:57,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021476727] [2020-10-29 03:17:57,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:57,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:17:57,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730168918] [2020-10-29 03:17:57,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:17:57,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:57,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:17:57,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=488, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:17:57,368 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 30 states. [2020-10-29 03:17:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:58,910 INFO L93 Difference]: Finished difference Result 286 states and 292 transitions. [2020-10-29 03:17:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:17:58,911 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 166 [2020-10-29 03:17:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:58,912 INFO L225 Difference]: With dead ends: 286 [2020-10-29 03:17:58,912 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 03:17:58,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1140, Invalid=2052, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:17:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 03:17:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2020-10-29 03:17:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-29 03:17:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2020-10-29 03:17:58,928 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 166 [2020-10-29 03:17:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:58,929 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2020-10-29 03:17:58,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:17:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2020-10-29 03:17:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 03:17:58,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:58,930 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:58,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:17:58,931 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash 574247644, now seen corresponding path program 26 times [2020-10-29 03:17:58,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:58,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104851816] [2020-10-29 03:17:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:59,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:04,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 03:18:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-29 03:18:04,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:18:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:18:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 03:18:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:04,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:04,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:04,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:04,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:04,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:04,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:04,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:04,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:18:04,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:04,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-10-29 03:18:04,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104851816] [2020-10-29 03:18:04,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:04,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:18:04,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255495960] [2020-10-29 03:18:04,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:18:04,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:18:04,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:18:04,866 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 31 states. [2020-10-29 03:18:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:06,520 INFO L93 Difference]: Finished difference Result 296 states and 302 transitions. [2020-10-29 03:18:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:18:06,521 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 172 [2020-10-29 03:18:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:06,522 INFO L225 Difference]: With dead ends: 296 [2020-10-29 03:18:06,522 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 03:18:06,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1224, Invalid=2198, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:18:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 03:18:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2020-10-29 03:18:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 03:18:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2020-10-29 03:18:06,537 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 172 [2020-10-29 03:18:06,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:06,537 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2020-10-29 03:18:06,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:18:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2020-10-29 03:18:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 03:18:06,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:06,538 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:06,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:18:06,539 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:06,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1614777538, now seen corresponding path program 27 times [2020-10-29 03:18:06,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:06,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030124982] [2020-10-29 03:18:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:11,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-29 03:18:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-29 03:18:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:11,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:18:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:18:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 03:18:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:12,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:12,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:12,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:12,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:12,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:18:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-10-29 03:18:12,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030124982] [2020-10-29 03:18:12,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:12,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:18:12,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900223557] [2020-10-29 03:18:12,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:18:12,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:12,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:18:12,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=553, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:18:12,651 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 32 states. [2020-10-29 03:18:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:14,314 INFO L93 Difference]: Finished difference Result 306 states and 312 transitions. [2020-10-29 03:18:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:18:14,314 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 178 [2020-10-29 03:18:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:14,316 INFO L225 Difference]: With dead ends: 306 [2020-10-29 03:18:14,316 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 03:18:14,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1311, Invalid=2349, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:18:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 03:18:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2020-10-29 03:18:14,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 03:18:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2020-10-29 03:18:14,331 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 178 [2020-10-29 03:18:14,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:14,331 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2020-10-29 03:18:14,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:18:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2020-10-29 03:18:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 03:18:14,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:14,334 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:14,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:18:14,335 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash -697597400, now seen corresponding path program 28 times [2020-10-29 03:18:14,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:14,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750041194] [2020-10-29 03:18:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:14,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:19,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:19,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 03:18:19,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5191 [2020-10-29 03:18:19,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:19,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:18:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:18:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 03:18:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:20,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:20,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:20,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:20,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:20,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:18:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-10-29 03:18:20,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750041194] [2020-10-29 03:18:20,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:20,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:18:20,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049456473] [2020-10-29 03:18:20,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:18:20,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:18:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=587, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:18:20,501 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 33 states. [2020-10-29 03:18:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:22,358 INFO L93 Difference]: Finished difference Result 316 states and 322 transitions. [2020-10-29 03:18:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:18:22,359 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 184 [2020-10-29 03:18:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:22,361 INFO L225 Difference]: With dead ends: 316 [2020-10-29 03:18:22,361 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 03:18:22,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1401, Invalid=2505, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:18:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 03:18:22,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2020-10-29 03:18:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-29 03:18:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2020-10-29 03:18:22,377 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 184 [2020-10-29 03:18:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:22,377 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2020-10-29 03:18:22,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:18:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2020-10-29 03:18:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 03:18:22,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:22,378 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:22,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:18:22,379 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:22,379 INFO L82 PathProgramCache]: Analyzing trace with hash -443837682, now seen corresponding path program 29 times [2020-10-29 03:18:22,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:22,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316941758] [2020-10-29 03:18:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:22,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:27,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:27,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-29 03:18:27,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 03:18:27,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:27,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:27,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:18:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:18:27,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 03:18:27,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:28,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:28,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:28,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:28,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:18:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-10-29 03:18:28,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316941758] [2020-10-29 03:18:28,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:28,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:18:28,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813257425] [2020-10-29 03:18:28,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:18:28,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:28,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:18:28,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=622, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:18:28,465 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 34 states. [2020-10-29 03:18:30,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:30,391 INFO L93 Difference]: Finished difference Result 326 states and 332 transitions. [2020-10-29 03:18:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:18:30,391 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 190 [2020-10-29 03:18:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:30,393 INFO L225 Difference]: With dead ends: 326 [2020-10-29 03:18:30,393 INFO L226 Difference]: Without dead ends: 200 [2020-10-29 03:18:30,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1494, Invalid=2666, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:18:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-29 03:18:30,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2020-10-29 03:18:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 03:18:30,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2020-10-29 03:18:30,416 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 190 [2020-10-29 03:18:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:30,417 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2020-10-29 03:18:30,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:18:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2020-10-29 03:18:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-29 03:18:30,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:30,418 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:30,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:18:30,418 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash -521855116, now seen corresponding path program 30 times [2020-10-29 03:18:30,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:30,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653907291] [2020-10-29 03:18:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:30,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5164 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 03:18:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:36,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:36,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:36,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:18:36,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:36,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:18:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-10-29 03:18:36,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653907291] [2020-10-29 03:18:36,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:36,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:18:36,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097912878] [2020-10-29 03:18:36,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:18:36,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:36,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:18:36,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=658, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:18:36,698 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 35 states. [2020-10-29 03:18:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:38,706 INFO L93 Difference]: Finished difference Result 336 states and 342 transitions. [2020-10-29 03:18:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:18:38,708 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 196 [2020-10-29 03:18:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:38,709 INFO L225 Difference]: With dead ends: 336 [2020-10-29 03:18:38,709 INFO L226 Difference]: Without dead ends: 206 [2020-10-29 03:18:38,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1590, Invalid=2832, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 03:18:38,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-29 03:18:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2020-10-29 03:18:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-29 03:18:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2020-10-29 03:18:38,724 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 196 [2020-10-29 03:18:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:38,724 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2020-10-29 03:18:38,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:18:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2020-10-29 03:18:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-29 03:18:38,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:38,726 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:38,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:18:38,726 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash -734689446, now seen corresponding path program 31 times [2020-10-29 03:18:38,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:38,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374302410] [2020-10-29 03:18:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:44,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:44,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 03:18:44,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5307 [2020-10-29 03:18:44,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:44,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:18:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:18:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 03:18:44,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:45,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:45,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:45,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:18:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-10-29 03:18:45,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374302410] [2020-10-29 03:18:45,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:45,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:18:45,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727269342] [2020-10-29 03:18:45,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:18:45,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:45,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:18:45,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=695, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:18:45,223 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 36 states. [2020-10-29 03:18:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:47,233 INFO L93 Difference]: Finished difference Result 346 states and 352 transitions. [2020-10-29 03:18:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:18:47,234 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 202 [2020-10-29 03:18:47,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:47,236 INFO L225 Difference]: With dead ends: 346 [2020-10-29 03:18:47,236 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 03:18:47,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1689, Invalid=3003, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 03:18:47,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 03:18:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2020-10-29 03:18:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-10-29 03:18:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2020-10-29 03:18:47,253 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 202 [2020-10-29 03:18:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:47,253 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2020-10-29 03:18:47,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:18:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2020-10-29 03:18:47,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 03:18:47,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:47,255 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:47,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:18:47,255 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:47,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:47,256 INFO L82 PathProgramCache]: Analyzing trace with hash -911070528, now seen corresponding path program 32 times [2020-10-29 03:18:47,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:47,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457419579] [2020-10-29 03:18:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:47,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:52,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:52,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5556 [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 03:18:52,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:54,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:54,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:54,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:54,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:54,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:54,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:18:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-10-29 03:18:54,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457419579] [2020-10-29 03:18:54,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:54,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:18:54,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577653340] [2020-10-29 03:18:54,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:18:54,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:54,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:18:54,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=733, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:18:54,061 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 37 states. [2020-10-29 03:18:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:56,339 INFO L93 Difference]: Finished difference Result 356 states and 362 transitions. [2020-10-29 03:18:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:18:56,340 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 208 [2020-10-29 03:18:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:56,342 INFO L225 Difference]: With dead ends: 356 [2020-10-29 03:18:56,343 INFO L226 Difference]: Without dead ends: 218 [2020-10-29 03:18:56,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1791, Invalid=3179, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 03:18:56,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-29 03:18:56,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2020-10-29 03:18:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 03:18:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2020-10-29 03:18:56,358 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 208 [2020-10-29 03:18:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:56,359 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2020-10-29 03:18:56,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:18:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2020-10-29 03:18:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 03:18:56,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:56,360 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:56,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:18:56,361 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:56,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1878496858, now seen corresponding path program 33 times [2020-10-29 03:18:56,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:56,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723655321] [2020-10-29 03:18:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:01,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:01,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 03:19:01,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:19:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5558 [2020-10-29 03:19:01,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:01,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:19:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:19:01,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 03:19:01,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:03,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:19:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:03,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:19:03,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:19:03,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:19:03,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:19:03,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:19:03,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:19:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:19:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:19:03,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:19:03,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:19:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-10-29 03:19:03,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723655321] [2020-10-29 03:19:03,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:19:03,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:19:03,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257864244] [2020-10-29 03:19:03,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:19:03,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:19:03,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:19:03,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=771, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:19:03,191 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 38 states. [2020-10-29 03:19:05,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:19:05,358 INFO L93 Difference]: Finished difference Result 366 states and 372 transitions. [2020-10-29 03:19:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:19:05,359 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 214 [2020-10-29 03:19:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:19:05,361 INFO L225 Difference]: With dead ends: 366 [2020-10-29 03:19:05,361 INFO L226 Difference]: Without dead ends: 224 [2020-10-29 03:19:05,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1860, Invalid=3252, Unknown=0, NotChecked=0, Total=5112 [2020-10-29 03:19:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-29 03:19:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2020-10-29 03:19:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-29 03:19:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2020-10-29 03:19:05,375 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 214 [2020-10-29 03:19:05,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:19:05,376 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2020-10-29 03:19:05,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:19:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2020-10-29 03:19:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 03:19:05,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:19:05,377 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:19:05,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:19:05,378 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:19:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:19:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash 6136844, now seen corresponding path program 34 times [2020-10-29 03:19:05,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:19:05,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072036564] [2020-10-29 03:19:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:19:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:19:05,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:19:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking...