/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-lopstr16/scalar_loopdep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:03:17,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:03:17,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:03:17,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:03:17,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:03:17,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:03:17,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:03:17,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:03:17,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:03:17,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:03:17,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:03:17,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:03:17,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:03:17,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:03:17,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:03:17,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:03:17,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:03:17,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:03:17,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:03:17,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:03:17,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:03:17,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:03:17,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:03:17,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:03:17,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:03:17,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:03:17,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:03:17,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:03:17,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:03:17,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:03:17,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:03:17,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:03:17,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:03:17,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:03:17,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:03:17,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:03:17,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:03:17,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:03:17,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:03:17,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:03:17,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:03:17,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:03:17,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:03:17,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:03:17,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:03:17,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:03:17,806 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:03:17,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:03:17,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:03:17,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:03:17,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:03:17,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:03:17,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:03:17,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:03:17,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:03:17,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:03:17,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:03:17,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:03:17,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:03:17,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:03:17,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:03:17,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:03:17,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:03:17,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:03:17,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:03:17,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:03:17,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:03:17,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:03:17,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:03:17,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:03:17,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:03:17,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:03:18,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:03:18,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:03:18,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:03:18,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:03:18,265 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:03:18,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/scalar_loopdep.i [2020-10-29 04:03:18,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58cbe5ba6/5c38408b6008440d90dfca694d414b39/FLAG2ee2507d6 [2020-10-29 04:03:18,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:03:18,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/scalar_loopdep.i [2020-10-29 04:03:18,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58cbe5ba6/5c38408b6008440d90dfca694d414b39/FLAG2ee2507d6 [2020-10-29 04:03:19,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58cbe5ba6/5c38408b6008440d90dfca694d414b39 [2020-10-29 04:03:19,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:03:19,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:03:19,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:03:19,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:03:19,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:03:19,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:03:19" (1/1) ... [2020-10-29 04:03:19,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d360de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:19, skipping insertion in model container [2020-10-29 04:03:19,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:03:19" (1/1) ... [2020-10-29 04:03:19,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:03:19,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:03:19,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:03:21,170 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:03:21,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:03:21,213 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:03:21,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21 WrapperNode [2020-10-29 04:03:21,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:03:21,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:03:21,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:03:21,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:03:21,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... [2020-10-29 04:03:21,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... [2020-10-29 04:03:21,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... [2020-10-29 04:03:21,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... [2020-10-29 04:03:21,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... [2020-10-29 04:03:21,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... [2020-10-29 04:03:21,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... [2020-10-29 04:03:21,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:03:21,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:03:21,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:03:21,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:03:21,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:03:21,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:03:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:03:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:03:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:03:21,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:03:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:03:21,355 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:03:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 04:03:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 04:03:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:03:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:03:21,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:03:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:03:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:03:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:03:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:03:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:03:21,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:03:21,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:03:21,654 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:03:21,654 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 04:03:21,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:03:21 BoogieIcfgContainer [2020-10-29 04:03:21,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:03:21,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:03:21,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:03:21,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:03:21,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:03:19" (1/3) ... [2020-10-29 04:03:21,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aa6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:03:21, skipping insertion in model container [2020-10-29 04:03:21,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:03:21" (2/3) ... [2020-10-29 04:03:21,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aa6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:03:21, skipping insertion in model container [2020-10-29 04:03:21,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:03:21" (3/3) ... [2020-10-29 04:03:21,675 INFO L111 eAbstractionObserver]: Analyzing ICFG scalar_loopdep.i [2020-10-29 04:03:21,687 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:03:21,693 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:03:21,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:03:21,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:03:21,730 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:03:21,731 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:03:21,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:03:21,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:03:21,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:03:21,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:03:21,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:03:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-29 04:03:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 04:03:21,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:21,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:21,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash 242942612, now seen corresponding path program 1 times [2020-10-29 04:03:21,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:21,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397466388] [2020-10-29 04:03:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:03:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 04:03:22,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:03:22,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:03:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:22,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:03:22,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:03:22,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397466388] [2020-10-29 04:03:22,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:03:22,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:03:22,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441546293] [2020-10-29 04:03:22,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 04:03:22,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:22,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 04:03:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:03:22,216 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-29 04:03:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:22,339 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2020-10-29 04:03:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 04:03:22,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-29 04:03:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:22,350 INFO L225 Difference]: With dead ends: 56 [2020-10-29 04:03:22,350 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 04:03:22,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 04:03:22,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 04:03:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2020-10-29 04:03:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-29 04:03:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-29 04:03:22,401 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2020-10-29 04:03:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:22,402 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-29 04:03:22,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 04:03:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-29 04:03:22,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 04:03:22,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:22,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:22,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:03:22,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:22,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1797232498, now seen corresponding path program 1 times [2020-10-29 04:03:22,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:22,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091784088] [2020-10-29 04:03:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 04:03:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 04:03:22,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:03:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:22,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:22,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:22,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:03:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:22,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:03:22,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091784088] [2020-10-29 04:03:22,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:03:22,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:03:22,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330947392] [2020-10-29 04:03:22,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:03:22,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:22,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:03:22,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:03:22,679 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2020-10-29 04:03:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:22,862 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-29 04:03:22,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:03:22,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 04:03:22,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:22,864 INFO L225 Difference]: With dead ends: 40 [2020-10-29 04:03:22,864 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 04:03:22,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:03:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 04:03:22,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-10-29 04:03:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 04:03:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-29 04:03:22,873 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-10-29 04:03:22,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:22,874 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-29 04:03:22,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:03:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-29 04:03:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 04:03:22,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:22,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:22,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:03:22,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:22,876 INFO L82 PathProgramCache]: Analyzing trace with hash 439108588, now seen corresponding path program 1 times [2020-10-29 04:03:22,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:22,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574047127] [2020-10-29 04:03:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:23,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 04:03:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-29 04:03:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:23,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:03:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:03:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:23,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:23,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:23,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:23,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:03:23,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:23,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:23,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:23,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:03:23,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574047127] [2020-10-29 04:03:23,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:23,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:03:23,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812413160] [2020-10-29 04:03:23,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:03:23,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:23,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:03:23,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:03:23,673 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2020-10-29 04:03:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:24,427 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-10-29 04:03:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:03:24,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-29 04:03:24,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:24,430 INFO L225 Difference]: With dead ends: 49 [2020-10-29 04:03:24,430 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 04:03:24,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:03:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 04:03:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-10-29 04:03:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 04:03:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-29 04:03:24,440 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-10-29 04:03:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:24,440 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-29 04:03:24,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:03:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-29 04:03:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 04:03:24,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:24,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:24,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:03:24,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2079244234, now seen corresponding path program 2 times [2020-10-29 04:03:24,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:24,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973781256] [2020-10-29 04:03:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:24,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:24,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:03:24,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:03:24,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-29 04:03:24,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:24,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:03:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:24,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:03:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:24,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:24,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:24,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:03:24,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:24,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:24,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:03:25,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973781256] [2020-10-29 04:03:25,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:25,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:03:25,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470929402] [2020-10-29 04:03:25,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:03:25,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:25,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:03:25,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:03:25,010 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2020-10-29 04:03:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:25,471 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-29 04:03:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:03:25,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-10-29 04:03:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:25,474 INFO L225 Difference]: With dead ends: 43 [2020-10-29 04:03:25,474 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 04:03:25,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:03:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 04:03:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2020-10-29 04:03:25,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 04:03:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-29 04:03:25,484 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 19 [2020-10-29 04:03:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:25,484 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-29 04:03:25,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:03:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-29 04:03:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 04:03:25,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:25,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:25,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:03:25,486 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:25,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1727076538, now seen corresponding path program 1 times [2020-10-29 04:03:25,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:25,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331971856] [2020-10-29 04:03:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:25,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 04:03:25,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:03:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-29 04:03:25,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:25,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:03:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:03:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:03:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:26,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:26,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:03:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:26,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:03:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 04:03:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:26,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:26,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:26,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:26,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:03:26,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:26,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:03:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:03:26,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331971856] [2020-10-29 04:03:26,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:26,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:03:26,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325743693] [2020-10-29 04:03:26,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:03:26,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:03:26,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:03:26,132 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 11 states. [2020-10-29 04:03:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:26,871 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-10-29 04:03:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:03:26,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-29 04:03:26,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:26,873 INFO L225 Difference]: With dead ends: 49 [2020-10-29 04:03:26,873 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 04:03:26,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:03:26,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 04:03:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-29 04:03:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 04:03:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-29 04:03:26,886 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25 [2020-10-29 04:03:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:26,886 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-29 04:03:26,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:03:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-29 04:03:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 04:03:26,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:26,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:26,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:03:26,891 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:26,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1921080028, now seen corresponding path program 2 times [2020-10-29 04:03:26,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:26,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908553523] [2020-10-29 04:03:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:03:28,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:03:28,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-29 04:03:28,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:03:28,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 04:03:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:28,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:28,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 04:03:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:28,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:03:28,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908553523] [2020-10-29 04:03:28,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:28,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:03:28,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382974393] [2020-10-29 04:03:28,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:03:28,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:28,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:03:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:03:28,193 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 12 states. [2020-10-29 04:03:28,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:28,823 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-10-29 04:03:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 04:03:28,823 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-29 04:03:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:28,825 INFO L225 Difference]: With dead ends: 65 [2020-10-29 04:03:28,825 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 04:03:28,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:03:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 04:03:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2020-10-29 04:03:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 04:03:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-29 04:03:28,837 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 27 [2020-10-29 04:03:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:28,837 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-29 04:03:28,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:03:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-29 04:03:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:03:28,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:28,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:28,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:03:28,839 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:28,839 INFO L82 PathProgramCache]: Analyzing trace with hash 620127106, now seen corresponding path program 3 times [2020-10-29 04:03:28,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:28,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051298225] [2020-10-29 04:03:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:30,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:30,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:03:30,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:03:30,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-10-29 04:03:30,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:30,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 04:03:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:03:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:30,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:30,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:30,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:30,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:30,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:30,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:30,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:30,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 04:03:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:30,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:30,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:30,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:30,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:30,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:30,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:03:30,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051298225] [2020-10-29 04:03:30,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:30,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:03:30,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105268248] [2020-10-29 04:03:30,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:03:30,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:30,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:03:30,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:03:30,442 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 13 states. [2020-10-29 04:03:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:30,965 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-10-29 04:03:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:03:30,965 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-10-29 04:03:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:30,967 INFO L225 Difference]: With dead ends: 61 [2020-10-29 04:03:30,967 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 04:03:30,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:03:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 04:03:30,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 38. [2020-10-29 04:03:30,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 04:03:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-29 04:03:30,981 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 29 [2020-10-29 04:03:30,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:30,981 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-29 04:03:30,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:03:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-29 04:03:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 04:03:30,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:30,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:30,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:03:30,983 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:30,983 INFO L82 PathProgramCache]: Analyzing trace with hash -144142210, now seen corresponding path program 4 times [2020-10-29 04:03:30,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:30,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012562353] [2020-10-29 04:03:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 04:03:34,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:03:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3543 [2020-10-29 04:03:34,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:34,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:03:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:03:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:03:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:35,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:35,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:03:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:35,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:03:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:03:35,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 04:03:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:35,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:35,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:35,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 04:03:35,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:35,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:03:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:35,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:35,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:03:35,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:35,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:03:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:03:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:03:35,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012562353] [2020-10-29 04:03:35,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:35,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:03:35,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005339561] [2020-10-29 04:03:35,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:03:35,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:35,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:03:35,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:03:35,276 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 14 states. [2020-10-29 04:03:35,536 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-29 04:03:35,950 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-29 04:03:36,349 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-29 04:03:38,841 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-29 04:03:39,102 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-29 04:03:39,395 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-29 04:03:39,953 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 04:03:40,469 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-29 04:03:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:40,596 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-10-29 04:03:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:03:40,597 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-29 04:03:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:40,598 INFO L225 Difference]: With dead ends: 67 [2020-10-29 04:03:40,598 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 04:03:40,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:03:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 04:03:40,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-29 04:03:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 04:03:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-10-29 04:03:40,608 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2020-10-29 04:03:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:40,609 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-10-29 04:03:40,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:03:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-10-29 04:03:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 04:03:40,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:40,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:40,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:03:40,610 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:40,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:40,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1667436764, now seen corresponding path program 5 times [2020-10-29 04:03:40,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:40,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784796519] [2020-10-29 04:03:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:42,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:45,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:45,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 04:03:45,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:03:45,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:03:45,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:45,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:03:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:45,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:03:45,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:45,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:45,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:45,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:45,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:45,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:45,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:45,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:45,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 04:03:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:45,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:45,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:45,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 04:03:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:45,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:45,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:45,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:03:45,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:45,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:45,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:03:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:45,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784796519] [2020-10-29 04:03:45,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:45,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:03:45,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028593086] [2020-10-29 04:03:45,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:03:45,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:45,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:03:45,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:03:45,956 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 15 states. [2020-10-29 04:03:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:46,628 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-10-29 04:03:46,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:03:46,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-10-29 04:03:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:46,630 INFO L225 Difference]: With dead ends: 83 [2020-10-29 04:03:46,630 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 04:03:46,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:03:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 04:03:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 51. [2020-10-29 04:03:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 04:03:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-29 04:03:46,643 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 37 [2020-10-29 04:03:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:46,643 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-29 04:03:46,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:03:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-29 04:03:46,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 04:03:46,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:46,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:46,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:03:46,645 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:46,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1161891398, now seen corresponding path program 6 times [2020-10-29 04:03:46,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:46,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349778051] [2020-10-29 04:03:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:47,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:47,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:51,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:51,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 04:03:51,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:03:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:03:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:51,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:03:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 04:03:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:03:51,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:03:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:51,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:51,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:03:51,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:51,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:03:51,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:51,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:03:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:51,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:03:51,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:03:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:51,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:51,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:51,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:51,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:03:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:51,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:51,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:51,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:03:51,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:03:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:03:51,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:51,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:03:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:03:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:03:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:03:52,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349778051] [2020-10-29 04:03:52,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:03:52,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:03:52,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082789722] [2020-10-29 04:03:52,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:03:52,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:03:52,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:03:52,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:03:52,008 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 16 states. [2020-10-29 04:03:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:03:52,854 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-10-29 04:03:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:03:52,855 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-29 04:03:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:03:52,856 INFO L225 Difference]: With dead ends: 75 [2020-10-29 04:03:52,856 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 04:03:52,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:03:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 04:03:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2020-10-29 04:03:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 04:03:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-10-29 04:03:52,883 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 39 [2020-10-29 04:03:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:03:52,884 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-10-29 04:03:52,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:03:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-10-29 04:03:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 04:03:52,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:03:52,889 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:03:52,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:03:52,889 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:03:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:03:52,890 INFO L82 PathProgramCache]: Analyzing trace with hash -723401674, now seen corresponding path program 7 times [2020-10-29 04:03:52,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:03:52,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609180574] [2020-10-29 04:03:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:03:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:03:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:53,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:55,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:03:57,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:03:57,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:03:57,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-29 04:03:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:03:57,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:03:57,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:03:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:03:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:03:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 04:03:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:03:58,924 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-29 04:03:59,301 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-29 04:03:59,681 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-29 04:04:00,165 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-29 04:04:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:00,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:00,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:00,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:04:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:00,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:04:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:04:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 04:04:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:00,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:04:00,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:00,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:04:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:04:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 04:04:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:00,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:00,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:04:00,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:00,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:04:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:04:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:00,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 04:04:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:00,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:00,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:00,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:04:00,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:00,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:04:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:04:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:04:00,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609180574] [2020-10-29 04:04:00,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:00,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:04:00,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123546879] [2020-10-29 04:04:00,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:04:00,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:00,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:04:00,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:04:00,779 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 17 states. [2020-10-29 04:04:02,050 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-29 04:04:02,850 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-29 04:04:03,365 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-29 04:04:03,842 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 04:04:04,315 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 04:04:05,425 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-29 04:04:06,284 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-29 04:04:06,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:06,537 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-10-29 04:04:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:04:06,538 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-29 04:04:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:06,540 INFO L225 Difference]: With dead ends: 85 [2020-10-29 04:04:06,540 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 04:04:06,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2020-10-29 04:04:06,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 04:04:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-29 04:04:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 04:04:06,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-29 04:04:06,551 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2020-10-29 04:04:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:06,552 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-29 04:04:06,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:04:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-29 04:04:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 04:04:06,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:06,553 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:06,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:04:06,553 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:06,554 INFO L82 PathProgramCache]: Analyzing trace with hash 364242708, now seen corresponding path program 8 times [2020-10-29 04:04:06,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:06,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486750973] [2020-10-29 04:04:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:11,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:11,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:11,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 04:04:11,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:04:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:04:11,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:11,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:04:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:04:11,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:04:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:12,184 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-10-29 04:04:12,442 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-29 04:04:12,812 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-29 04:04:13,317 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-29 04:04:14,166 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2020-10-29 04:04:14,830 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2020-10-29 04:04:15,625 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-10-29 04:04:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:16,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:16,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:16,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:16,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:04:16,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:16,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:04:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:16,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:04:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 04:04:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 04:04:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:16,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:04:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:04:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:16,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 04:04:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:16,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:16,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:16,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:16,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:04:16,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:16,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:16,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:04:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:04:16,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:17,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 04:04:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:17,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:17,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:17,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:17,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:17,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:04:17,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486750973] [2020-10-29 04:04:17,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:17,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:04:17,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724767826] [2020-10-29 04:04:17,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:04:17,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:17,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:04:17,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:04:17,030 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 18 states. [2020-10-29 04:04:18,886 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-29 04:04:19,878 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-29 04:04:20,873 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-29 04:04:21,504 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:04:22,143 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 04:04:22,671 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-29 04:04:23,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:04:23,208 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2020-10-29 04:04:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:04:23,210 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-29 04:04:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:04:23,212 INFO L225 Difference]: With dead ends: 87 [2020-10-29 04:04:23,212 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 04:04:23,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:04:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 04:04:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-29 04:04:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 04:04:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-10-29 04:04:23,226 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 47 [2020-10-29 04:04:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:04:23,226 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-10-29 04:04:23,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:04:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-10-29 04:04:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 04:04:23,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:04:23,230 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:04:23,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:04:23,231 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:04:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:04:23,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1913440882, now seen corresponding path program 9 times [2020-10-29 04:04:23,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:04:23,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322777340] [2020-10-29 04:04:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:04:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:23,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:23,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:25,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:25,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:28,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:04:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:30,433 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2020-10-29 04:04:31,348 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-10-29 04:04:32,701 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2020-10-29 04:04:34,909 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 101 [2020-10-29 04:04:38,179 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 166 DAG size of output: 119 [2020-10-29 04:04:40,086 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 147 DAG size of output: 114 [2020-10-29 04:04:42,266 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 157 DAG size of output: 121 [2020-10-29 04:04:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:04:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:43,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:43,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:04:43,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:43,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:04:43,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:43,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:04:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:43,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:04:43,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:04:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:43,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:04:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 04:04:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:43,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:43,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:43,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:04:43,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:43,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:04:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:04:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:04:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 04:04:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:04:44,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:04:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:04:44,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:04:44,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:04:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:04:44,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:04:44,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:04:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:04:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:04:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:04:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:04:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:04:44,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322777340] [2020-10-29 04:04:44,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:04:44,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 04:04:44,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210769930] [2020-10-29 04:04:44,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 04:04:44,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:04:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 04:04:44,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:04:44,193 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 20 states. [2020-10-29 04:04:44,591 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 39 [2020-10-29 04:04:51,618 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2020-10-29 04:04:56,803 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2020-10-29 04:04:59,905 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 04:05:02,237 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 04:05:04,550 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:05:07,796 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 04:05:11,261 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 141 DAG size of output: 136 [2020-10-29 04:05:12,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:05:12,153 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2020-10-29 04:05:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 04:05:12,155 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-29 04:05:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:05:12,156 INFO L225 Difference]: With dead ends: 89 [2020-10-29 04:05:12,156 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 04:05:12,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:05:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 04:05:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-29 04:05:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 04:05:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-10-29 04:05:12,167 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 49 [2020-10-29 04:05:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:05:12,167 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-10-29 04:05:12,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 04:05:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-10-29 04:05:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 04:05:12,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:05:12,168 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:05:12,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:05:12,169 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:05:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:05:12,169 INFO L82 PathProgramCache]: Analyzing trace with hash 339234384, now seen corresponding path program 10 times [2020-10-29 04:05:12,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:05:12,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114929911] [2020-10-29 04:05:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:05:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:17,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 04:05:17,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 04:05:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:05:17,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:17,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:05:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:05:17,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:05:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:20,835 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-29 04:05:21,400 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-29 04:05:22,154 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-29 04:05:23,562 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2020-10-29 04:05:25,475 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2020-10-29 04:05:28,561 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2020-10-29 04:05:33,046 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2020-10-29 04:05:39,592 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 173 DAG size of output: 99 [2020-10-29 04:05:43,561 WARN L193 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 144 DAG size of output: 92 [2020-10-29 04:05:46,634 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 150 DAG size of output: 94 [2020-10-29 04:05:51,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:05:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:51,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:51,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:05:51,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:05:51,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:51,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:51,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:05:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:05:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:51,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 04:05:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:51,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:51,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:51,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 04:05:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:51,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:05:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:05:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:05:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:51,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:05:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:51,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:51,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:51,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:05:51,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:51,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:05:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 04:05:51,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:05:51,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:52,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:05:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:05:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:05:52,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:05:52,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:05:52,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:05:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:05:52,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:05:52,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:05:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:05:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:05:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:05:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:05:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 04:05:52,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114929911] [2020-10-29 04:05:52,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:05:52,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 04:05:52,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16008016] [2020-10-29 04:05:52,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 04:05:52,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:05:52,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 04:05:52,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:05:52,101 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 22 states. [2020-10-29 04:05:52,600 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 31 [2020-10-29 04:06:09,289 WARN L193 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2020-10-29 04:06:18,306 WARN L193 SmtUtils]: Spent 4.65 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-10-29 04:06:23,297 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 04:06:27,808 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 132 [2020-10-29 04:06:30,859 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 136 [2020-10-29 04:06:38,203 WARN L193 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 97 [2020-10-29 04:06:45,407 WARN L193 SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 124 DAG size of output: 118 [2020-10-29 04:06:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:06:48,020 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2020-10-29 04:06:48,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:06:48,024 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-29 04:06:48,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:06:48,025 INFO L225 Difference]: With dead ends: 91 [2020-10-29 04:06:48,025 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 04:06:48,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 62.8s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:06:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 04:06:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-29 04:06:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 04:06:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-10-29 04:06:48,037 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 51 [2020-10-29 04:06:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:06:48,038 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-10-29 04:06:48,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 04:06:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-10-29 04:06:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 04:06:48,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:06:48,039 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:06:48,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:06:48,039 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:06:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:06:48,040 INFO L82 PathProgramCache]: Analyzing trace with hash -644722002, now seen corresponding path program 11 times [2020-10-29 04:06:48,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:06:48,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023849396] [2020-10-29 04:06:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:06:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:06:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:50,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:06:53,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:06:53,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 04:06:53,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 04:06:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:06:53,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:06:53,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:06:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 04:06:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:06:53,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:06:53,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:17,395 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-29 04:07:17,734 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-29 04:07:18,716 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-29 04:07:20,093 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60