/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:25:20,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:25:20,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:25:20,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:25:20,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:25:20,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:25:20,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:25:20,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:25:20,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:25:20,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:25:20,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:25:20,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:25:20,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:25:20,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:25:20,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:25:20,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:25:20,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:25:20,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:25:20,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:25:20,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:25:20,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:25:20,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:25:20,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:25:20,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:25:20,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:25:20,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:25:20,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:25:20,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:25:20,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:25:20,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:25:20,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:25:20,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:25:20,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:25:20,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:25:20,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:25:20,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:25:20,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:25:20,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:25:20,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:25:20,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:25:20,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:25:20,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:25:20,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:25:20,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:25:20,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:25:20,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:25:20,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:25:20,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:25:20,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:25:20,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:25:20,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:25:20,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:25:20,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:25:20,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:25:20,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:25:20,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:25:20,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:25:20,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:25:20,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:25:20,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:25:20,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:25:20,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:25:20,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:25:20,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:25:20,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:25:20,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:25:20,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:25:20,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:25:20,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:25:20,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:25:20,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:25:20,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:25:20,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:25:20,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:25:20,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:25:20,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:25:20,772 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:25:20,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label40.c [2020-10-28 13:25:20,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3d8cecd5/e2753fdb11674c87bd13cf65bea1e751/FLAGa173bd96a [2020-10-28 13:25:21,780 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:25:21,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label40.c [2020-10-28 13:25:21,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3d8cecd5/e2753fdb11674c87bd13cf65bea1e751/FLAGa173bd96a [2020-10-28 13:25:21,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3d8cecd5/e2753fdb11674c87bd13cf65bea1e751 [2020-10-28 13:25:21,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:25:21,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:25:21,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:25:21,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:25:21,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:25:21,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:25:21" (1/1) ... [2020-10-28 13:25:21,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571e44c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:21, skipping insertion in model container [2020-10-28 13:25:21,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:25:21" (1/1) ... [2020-10-28 13:25:21,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:25:22,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:25:22,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:25:22,856 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:25:23,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:25:23,349 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:25:23,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23 WrapperNode [2020-10-28 13:25:23,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:25:23,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:25:23,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:25:23,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:25:23,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... [2020-10-28 13:25:23,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... [2020-10-28 13:25:23,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... [2020-10-28 13:25:23,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... [2020-10-28 13:25:23,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... [2020-10-28 13:25:23,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... [2020-10-28 13:25:23,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... [2020-10-28 13:25:23,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:25:23,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:25:23,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:25:23,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:25:23,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:25:23,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:25:23,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:25:23,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:25:23,698 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:25:23,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:25:23,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:25:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:25:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:25:23,700 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:25:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:25:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:25:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:25:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:25:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:25:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:25:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:25:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:25:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:25:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:25:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:25:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:25:26,638 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:25:26,638 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:25:26,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:25:26 BoogieIcfgContainer [2020-10-28 13:25:26,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:25:26,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:25:26,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:25:26,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:25:26,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:25:21" (1/3) ... [2020-10-28 13:25:26,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7459191d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:25:26, skipping insertion in model container [2020-10-28 13:25:26,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:23" (2/3) ... [2020-10-28 13:25:26,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7459191d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:25:26, skipping insertion in model container [2020-10-28 13:25:26,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:25:26" (3/3) ... [2020-10-28 13:25:26,652 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label40.c [2020-10-28 13:25:26,665 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:25:26,671 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:25:26,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:25:26,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:25:26,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:25:26,720 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:25:26,721 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:25:26,721 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:25:26,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:25:26,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:25:26,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:25:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:25:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 13:25:26,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:26,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:26,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:26,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:26,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1005535700, now seen corresponding path program 1 times [2020-10-28 13:25:26,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:26,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977766509] [2020-10-28 13:25:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:27,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:25:27,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-28 13:25:27,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:27,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:25:27,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:25:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:25:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:25:27,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:27,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:27,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:27,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:27,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:25:27,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:27,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:25:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:25:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:25:27,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977766509] [2020-10-28 13:25:27,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:25:27,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:25:27,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602147521] [2020-10-28 13:25:27,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:25:27,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:27,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:25:27,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:25:27,894 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:25:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:32,813 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:25:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:25:32,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-28 13:25:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:32,845 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:25:32,845 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:25:32,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:25:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:25:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:25:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:25:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:25:33,004 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 70 [2020-10-28 13:25:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:33,005 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:25:33,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:25:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:25:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 13:25:33,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:33,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:33,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:25:33,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:33,022 INFO L82 PathProgramCache]: Analyzing trace with hash -980069172, now seen corresponding path program 1 times [2020-10-28 13:25:33,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:33,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119327496] [2020-10-28 13:25:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:34,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:34,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:25:34,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:25:34,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-28 13:25:34,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:34,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:25:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:25:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:25:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:25:34,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:34,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:34,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:34,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:34,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:25:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:34,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:25:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:25:34,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:34,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:34,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:25:34,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:34,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 13:25:34,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:34,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:34,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:34,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:34,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:25:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:25:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:25:35,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119327496] [2020-10-28 13:25:35,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:25:35,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:25:35,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892571812] [2020-10-28 13:25:35,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:35,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:35,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:35,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:35,085 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:25:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:40,396 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-28 13:25:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:25:40,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-28 13:25:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:40,409 INFO L225 Difference]: With dead ends: 2090 [2020-10-28 13:25:40,409 INFO L226 Difference]: Without dead ends: 1403 [2020-10-28 13:25:40,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:25:40,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-28 13:25:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-28 13:25:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-28 13:25:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1814 transitions. [2020-10-28 13:25:40,516 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1814 transitions. Word has length 146 [2020-10-28 13:25:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:40,519 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1814 transitions. [2020-10-28 13:25:40,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1814 transitions. [2020-10-28 13:25:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 13:25:40,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:40,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:40,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:25:40,532 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash 534424562, now seen corresponding path program 1 times [2020-10-28 13:25:40,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:40,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548503064] [2020-10-28 13:25:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:41,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:41,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 13:25:41,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:25:41,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-28 13:25:41,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:41,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:25:41,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 13:25:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:41,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:41,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:41,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:25:41,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:41,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:41,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:41,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:41,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:25:41,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:25:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:41,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:25:41,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:25:41,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548503064] [2020-10-28 13:25:41,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:41,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:25:41,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948134837] [2020-10-28 13:25:41,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:25:41,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:25:41,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:25:41,414 INFO L87 Difference]: Start difference. First operand 1379 states and 1814 transitions. Second operand 5 states. [2020-10-28 13:25:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:46,082 INFO L93 Difference]: Finished difference Result 3452 states and 4712 transitions. [2020-10-28 13:25:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:25:46,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-28 13:25:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:46,096 INFO L225 Difference]: With dead ends: 3452 [2020-10-28 13:25:46,096 INFO L226 Difference]: Without dead ends: 2079 [2020-10-28 13:25:46,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:25:46,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2020-10-28 13:25:46,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2073. [2020-10-28 13:25:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-10-28 13:25:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2617 transitions. [2020-10-28 13:25:46,167 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2617 transitions. Word has length 161 [2020-10-28 13:25:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:46,167 INFO L481 AbstractCegarLoop]: Abstraction has 2073 states and 2617 transitions. [2020-10-28 13:25:46,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:25:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2617 transitions. [2020-10-28 13:25:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-28 13:25:46,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:46,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:46,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:25:46,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:46,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:46,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1010545782, now seen corresponding path program 1 times [2020-10-28 13:25:46,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:46,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846569404] [2020-10-28 13:25:46,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:51,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:51,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-28 13:25:51,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:25:51,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4898 [2020-10-28 13:25:51,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:51,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:25:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:25:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:51,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:51,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:51,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:51,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:25:51,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:51,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:25:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:25:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:51,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:25:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:51,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:51,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:51,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:25:51,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:25:51,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:51,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:25:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:25:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:25:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:51,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:51,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:25:51,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:51,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 13:25:51,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:51,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:25:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:25:51,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:25:51,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:25:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:25:52,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846569404] [2020-10-28 13:25:52,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:25:52,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:25:52,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90635145] [2020-10-28 13:25:52,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:25:52,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:52,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:25:52,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:25:52,186 INFO L87 Difference]: Start difference. First operand 2073 states and 2617 transitions. Second operand 7 states. [2020-10-28 13:25:58,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:25:58,365 INFO L93 Difference]: Finished difference Result 5232 states and 6877 transitions. [2020-10-28 13:25:58,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:25:58,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-10-28 13:25:58,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:25:58,387 INFO L225 Difference]: With dead ends: 5232 [2020-10-28 13:25:58,388 INFO L226 Difference]: Without dead ends: 3165 [2020-10-28 13:25:58,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:25:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2020-10-28 13:25:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 3120. [2020-10-28 13:25:58,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-28 13:25:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 3735 transitions. [2020-10-28 13:25:58,504 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 3735 transitions. Word has length 299 [2020-10-28 13:25:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:25:58,505 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 3735 transitions. [2020-10-28 13:25:58,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:25:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 3735 transitions. [2020-10-28 13:25:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-28 13:25:58,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:58,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:58,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:25:58,513 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:58,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:58,514 INFO L82 PathProgramCache]: Analyzing trace with hash -301416970, now seen corresponding path program 1 times [2020-10-28 13:25:58,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:58,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728825072] [2020-10-28 13:25:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:03,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:03,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 13:26:03,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:26:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:26:03,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:03,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:26:03,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:26:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:03,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:03,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:03,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:03,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:26:03,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:03,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:26:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:04,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:04,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:26:04,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-28 13:26:04,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:04,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:26:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:26:04,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728825072] [2020-10-28 13:26:04,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:26:04,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:26:04,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635554878] [2020-10-28 13:26:04,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:04,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:04,732 INFO L87 Difference]: Start difference. First operand 3120 states and 3735 transitions. Second operand 7 states. [2020-10-28 13:26:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:09,900 INFO L93 Difference]: Finished difference Result 6977 states and 8340 transitions. [2020-10-28 13:26:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:26:09,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-28 13:26:09,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:09,922 INFO L225 Difference]: With dead ends: 6977 [2020-10-28 13:26:09,922 INFO L226 Difference]: Without dead ends: 3863 [2020-10-28 13:26:09,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:26:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2020-10-28 13:26:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3833. [2020-10-28 13:26:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3833 states. [2020-10-28 13:26:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 4514 transitions. [2020-10-28 13:26:10,044 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 4514 transitions. Word has length 319 [2020-10-28 13:26:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:10,045 INFO L481 AbstractCegarLoop]: Abstraction has 3833 states and 4514 transitions. [2020-10-28 13:26:10,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:10,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 4514 transitions. [2020-10-28 13:26:10,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 13:26:10,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:10,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:10,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:26:10,054 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:10,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:10,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1129266992, now seen corresponding path program 1 times [2020-10-28 13:26:10,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:10,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110564877] [2020-10-28 13:26:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:10,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-28 13:26:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:26:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:26:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:26:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:26:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:15,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:15,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:15,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:26:15,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:15,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:26:15,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:26:15,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:26:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:15,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:26:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:26:15,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:26:15,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:26:15,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:15,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:26:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:15,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:26:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:15,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:15,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:26:15,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:26:15,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:15,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:26:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 354 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 13:26:15,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110564877] [2020-10-28 13:26:15,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:15,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:26:15,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828865319] [2020-10-28 13:26:15,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:26:15,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:15,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:26:15,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:26:15,954 INFO L87 Difference]: Start difference. First operand 3833 states and 4514 transitions. Second operand 8 states. [2020-10-28 13:26:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:22,135 INFO L93 Difference]: Finished difference Result 8434 states and 10426 transitions. [2020-10-28 13:26:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:22,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 342 [2020-10-28 13:26:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:22,155 INFO L225 Difference]: With dead ends: 8434 [2020-10-28 13:26:22,155 INFO L226 Difference]: Without dead ends: 4191 [2020-10-28 13:26:22,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:26:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2020-10-28 13:26:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 4148. [2020-10-28 13:26:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4148 states. [2020-10-28 13:26:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 4486 transitions. [2020-10-28 13:26:22,286 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 4486 transitions. Word has length 342 [2020-10-28 13:26:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:22,287 INFO L481 AbstractCegarLoop]: Abstraction has 4148 states and 4486 transitions. [2020-10-28 13:26:22,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:26:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 4486 transitions. [2020-10-28 13:26:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-28 13:26:22,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:22,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:22,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:26:22,299 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:22,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1780675196, now seen corresponding path program 1 times [2020-10-28 13:26:22,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:22,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531932896] [2020-10-28 13:26:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:22,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:23,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-28 13:26:23,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:26:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-28 13:26:23,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:23,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:26:23,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:26:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:24,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:24,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:24,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:24,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:24,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:26:24,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:24,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:24,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:24,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:24,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:26:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:26:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:24,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:26:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:24,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:26:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:26:24,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:24,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:24,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:26:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:26:24,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531932896] [2020-10-28 13:26:24,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:24,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:24,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155201275] [2020-10-28 13:26:24,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:24,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:24,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:24,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:24,831 INFO L87 Difference]: Start difference. First operand 4148 states and 4486 transitions. Second operand 7 states. [2020-10-28 13:26:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:28,982 INFO L93 Difference]: Finished difference Result 9017 states and 9973 transitions. [2020-10-28 13:26:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:26:28,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 472 [2020-10-28 13:26:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:29,020 INFO L225 Difference]: With dead ends: 9017 [2020-10-28 13:26:29,020 INFO L226 Difference]: Without dead ends: 5551 [2020-10-28 13:26:29,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:26:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2020-10-28 13:26:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 5535. [2020-10-28 13:26:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5535 states. [2020-10-28 13:26:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 6047 transitions. [2020-10-28 13:26:29,168 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 6047 transitions. Word has length 472 [2020-10-28 13:26:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:29,169 INFO L481 AbstractCegarLoop]: Abstraction has 5535 states and 6047 transitions. [2020-10-28 13:26:29,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 6047 transitions. [2020-10-28 13:26:29,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-28 13:26:29,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:29,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:29,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:26:29,186 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:29,186 INFO L82 PathProgramCache]: Analyzing trace with hash 102939304, now seen corresponding path program 1 times [2020-10-28 13:26:29,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:29,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908678602] [2020-10-28 13:26:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:34,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4876 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:26:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:34,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:34,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:34,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:26:34,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:34,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:34,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:34,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:34,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:26:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:26:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:34,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:34,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:26:34,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:34,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-28 13:26:34,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:34,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:26:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 368 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:26:36,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908678602] [2020-10-28 13:26:36,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:36,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:36,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137793016] [2020-10-28 13:26:36,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:36,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:36,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:36,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:36,074 INFO L87 Difference]: Start difference. First operand 5535 states and 6047 transitions. Second operand 7 states. [2020-10-28 13:26:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:39,770 INFO L93 Difference]: Finished difference Result 10398 states and 11407 transitions. [2020-10-28 13:26:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:26:39,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-28 13:26:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:39,798 INFO L225 Difference]: With dead ends: 10398 [2020-10-28 13:26:39,798 INFO L226 Difference]: Without dead ends: 5545 [2020-10-28 13:26:39,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:26:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2020-10-28 13:26:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 5537. [2020-10-28 13:26:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5537 states. [2020-10-28 13:26:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 6048 transitions. [2020-10-28 13:26:39,956 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 6048 transitions. Word has length 566 [2020-10-28 13:26:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:39,957 INFO L481 AbstractCegarLoop]: Abstraction has 5537 states and 6048 transitions. [2020-10-28 13:26:39,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 6048 transitions. [2020-10-28 13:26:39,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-28 13:26:39,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:39,979 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:39,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:26:39,979 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:39,980 INFO L82 PathProgramCache]: Analyzing trace with hash 864003920, now seen corresponding path program 1 times [2020-10-28 13:26:39,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:39,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679393665] [2020-10-28 13:26:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:44,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:44,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-28 13:26:44,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:26:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4203 [2020-10-28 13:26:44,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:44,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:26:44,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:26:44,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:44,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:44,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:44,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:44,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:26:44,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:44,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:44,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:44,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:44,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:44,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:26:44,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:44,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:26:44,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:44,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:44,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:44,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:44,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:44,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:26:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:44,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:26:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:26:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:44,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:26:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:44,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:26:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:45,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:26:45,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 510 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:26:45,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679393665] [2020-10-28 13:26:45,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:45,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:45,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944973695] [2020-10-28 13:26:45,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:45,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:45,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:45,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:45,406 INFO L87 Difference]: Start difference. First operand 5537 states and 6048 transitions. Second operand 7 states. [2020-10-28 13:26:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:49,614 INFO L93 Difference]: Finished difference Result 11785 states and 13120 transitions. [2020-10-28 13:26:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:49,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 634 [2020-10-28 13:26:49,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:49,642 INFO L225 Difference]: With dead ends: 11785 [2020-10-28 13:26:49,642 INFO L226 Difference]: Without dead ends: 6930 [2020-10-28 13:26:49,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:26:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6930 states. [2020-10-28 13:26:49,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6930 to 6910. [2020-10-28 13:26:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6910 states. [2020-10-28 13:26:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6910 states to 6910 states and 7510 transitions. [2020-10-28 13:26:49,886 INFO L78 Accepts]: Start accepts. Automaton has 6910 states and 7510 transitions. Word has length 634 [2020-10-28 13:26:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:49,888 INFO L481 AbstractCegarLoop]: Abstraction has 6910 states and 7510 transitions. [2020-10-28 13:26:49,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6910 states and 7510 transitions. [2020-10-28 13:26:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2020-10-28 13:26:49,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:49,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:49,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:26:49,913 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:49,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1831727150, now seen corresponding path program 1 times [2020-10-28 13:26:49,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:49,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274923776] [2020-10-28 13:26:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:50,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:51,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:26:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:51,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:51,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:51,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:51,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:26:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:51,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:51,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:51,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:26:51,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:51,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:26:51,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:51,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:51,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:51,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:26:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:26:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:51,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:26:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:52,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:52,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:26:52,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:52,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:26:52,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:52,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:52,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:26:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 505 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:26:52,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274923776] [2020-10-28 13:26:52,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:52,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:52,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720844716] [2020-10-28 13:26:52,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:52,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:52,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:52,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:52,410 INFO L87 Difference]: Start difference. First operand 6910 states and 7510 transitions. Second operand 7 states. [2020-10-28 13:26:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:56,683 INFO L93 Difference]: Finished difference Result 14500 states and 15989 transitions. [2020-10-28 13:26:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:56,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 637 [2020-10-28 13:26:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:56,712 INFO L225 Difference]: With dead ends: 14500 [2020-10-28 13:26:56,712 INFO L226 Difference]: Without dead ends: 8272 [2020-10-28 13:26:56,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:26:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2020-10-28 13:26:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 8266. [2020-10-28 13:26:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8266 states. [2020-10-28 13:26:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 8942 transitions. [2020-10-28 13:26:56,884 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 8942 transitions. Word has length 637 [2020-10-28 13:26:56,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:56,886 INFO L481 AbstractCegarLoop]: Abstraction has 8266 states and 8942 transitions. [2020-10-28 13:26:56,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 8942 transitions. [2020-10-28 13:26:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2020-10-28 13:26:56,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:56,895 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:56,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:26:56,896 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:56,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1567505595, now seen corresponding path program 1 times [2020-10-28 13:26:56,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:56,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438060189] [2020-10-28 13:26:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:57,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:02,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:02,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 655 [2020-10-28 13:27:02,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:27:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:27:02,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:02,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:27:02,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-28 13:27:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:02,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:02,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:02,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:27:02,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:02,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:02,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:02,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:02,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:27:02,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:02,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:27:02,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:02,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:02,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:27:02,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:27:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:02,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-28 13:27:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:03,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:03,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 13:27:03,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:03,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:27:03,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:03,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:27:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:03,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 13:27:03,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:27:04,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438060189] [2020-10-28 13:27:04,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:04,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:27:04,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901375720] [2020-10-28 13:27:04,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:27:04,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:04,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:27:04,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:27:04,302 INFO L87 Difference]: Start difference. First operand 8266 states and 8942 transitions. Second operand 8 states. [2020-10-28 13:27:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:08,483 INFO L93 Difference]: Finished difference Result 17226 states and 18819 transitions. [2020-10-28 13:27:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:27:08,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 639 [2020-10-28 13:27:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:08,516 INFO L225 Difference]: With dead ends: 17226 [2020-10-28 13:27:08,516 INFO L226 Difference]: Without dead ends: 9642 [2020-10-28 13:27:08,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:27:08,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2020-10-28 13:27:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 9636. [2020-10-28 13:27:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9636 states. [2020-10-28 13:27:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9636 states to 9636 states and 10413 transitions. [2020-10-28 13:27:08,721 INFO L78 Accepts]: Start accepts. Automaton has 9636 states and 10413 transitions. Word has length 639 [2020-10-28 13:27:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:08,722 INFO L481 AbstractCegarLoop]: Abstraction has 9636 states and 10413 transitions. [2020-10-28 13:27:08,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:27:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9636 states and 10413 transitions. [2020-10-28 13:27:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2020-10-28 13:27:08,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:08,736 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:08,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:27:08,736 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1958522690, now seen corresponding path program 1 times [2020-10-28 13:27:08,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:08,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732582655] [2020-10-28 13:27:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:09,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:10,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:10,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 709 [2020-10-28 13:27:10,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-28 13:27:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:10,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-28 13:27:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 13:27:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:10,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:10,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:10,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:10,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:27:10,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:10,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:10,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:10,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:10,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:27:10,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:10,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:10,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:10,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:10,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:10,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:27:10,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:10,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:27:10,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:10,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:10,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:27:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:10,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:10,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:27:10,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:10,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 13:27:10,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:10,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:10,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:10,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:10,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 13:27:10,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 189 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-28 13:27:11,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732582655] [2020-10-28 13:27:11,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:11,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:27:11,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072080974] [2020-10-28 13:27:11,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:27:11,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:11,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:27:11,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:27:11,174 INFO L87 Difference]: Start difference. First operand 9636 states and 10413 transitions. Second operand 5 states. [2020-10-28 13:27:14,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:14,695 INFO L93 Difference]: Finished difference Result 20616 states and 22328 transitions. [2020-10-28 13:27:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:27:14,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 693 [2020-10-28 13:27:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:14,746 INFO L225 Difference]: With dead ends: 20616 [2020-10-28 13:27:14,747 INFO L226 Difference]: Without dead ends: 11662 [2020-10-28 13:27:14,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:27:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11662 states. [2020-10-28 13:27:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11662 to 11660. [2020-10-28 13:27:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-28 13:27:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 12528 transitions. [2020-10-28 13:27:14,999 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 12528 transitions. Word has length 693 [2020-10-28 13:27:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:15,000 INFO L481 AbstractCegarLoop]: Abstraction has 11660 states and 12528 transitions. [2020-10-28 13:27:15,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:27:15,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 12528 transitions. [2020-10-28 13:27:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-28 13:27:15,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:15,034 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:15,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:27:15,035 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:15,035 INFO L82 PathProgramCache]: Analyzing trace with hash -701041174, now seen corresponding path program 1 times [2020-10-28 13:27:15,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:15,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349440096] [2020-10-28 13:27:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:20,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:20,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-28 13:27:20,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:27:20,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5201 [2020-10-28 13:27:20,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:20,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:27:20,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-28 13:27:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:20,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:20,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:20,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:20,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:20,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:20,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:27:20,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 13:27:20,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:20,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:20,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:20,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:27:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:21,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:21,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:27:21,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:27:21,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:21,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:27:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:27:21,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:21,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:27:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:21,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:21,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:27:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:27:21,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:21,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:27:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:27:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:21,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:27:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:27:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-28 13:27:21,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:21,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-28 13:27:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2096 backedges. 332 proven. 5 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2020-10-28 13:27:22,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349440096] [2020-10-28 13:27:22,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:22,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:27:22,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711444589] [2020-10-28 13:27:22,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:27:22,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:22,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:27:22,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:27:22,604 INFO L87 Difference]: Start difference. First operand 11660 states and 12528 transitions. Second operand 5 states. [2020-10-28 13:27:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:25,979 INFO L93 Difference]: Finished difference Result 22640 states and 24366 transitions. [2020-10-28 13:27:25,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:27:25,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1129 [2020-10-28 13:27:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:26,016 INFO L225 Difference]: With dead ends: 22640 [2020-10-28 13:27:26,016 INFO L226 Difference]: Without dead ends: 11662 [2020-10-28 13:27:26,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:27:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11662 states. [2020-10-28 13:27:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11662 to 11660. [2020-10-28 13:27:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11660 states. [2020-10-28 13:27:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11660 states to 11660 states and 12345 transitions. [2020-10-28 13:27:26,240 INFO L78 Accepts]: Start accepts. Automaton has 11660 states and 12345 transitions. Word has length 1129 [2020-10-28 13:27:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:26,241 INFO L481 AbstractCegarLoop]: Abstraction has 11660 states and 12345 transitions. [2020-10-28 13:27:26,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:27:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 11660 states and 12345 transitions. [2020-10-28 13:27:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1300 [2020-10-28 13:27:26,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:26,277 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:26,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:27:26,277 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:26,278 INFO L82 PathProgramCache]: Analyzing trace with hash 349905038, now seen corresponding path program 1 times [2020-10-28 13:27:26,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:26,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501184353] [2020-10-28 13:27:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:31,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:31,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1321 [2020-10-28 13:27:31,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:31,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-28 13:27:31,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:31,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:27:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:27:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:32,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:32,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:32,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:27:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:27:32,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:27:32,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:27:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:32,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:27:32,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:27:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:27:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:27:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:32,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:32,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:27:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:27:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:33,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:33,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2967 backedges. 1177 proven. 169 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2020-10-28 13:27:35,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501184353] [2020-10-28 13:27:35,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:35,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:35,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268910073] [2020-10-28 13:27:35,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:35,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:35,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:35,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:35,124 INFO L87 Difference]: Start difference. First operand 11660 states and 12345 transitions. Second operand 7 states. [2020-10-28 13:27:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:39,591 INFO L93 Difference]: Finished difference Result 24022 states and 25505 transitions. [2020-10-28 13:27:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:27:39,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1299 [2020-10-28 13:27:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:39,627 INFO L225 Difference]: With dead ends: 24022 [2020-10-28 13:27:39,627 INFO L226 Difference]: Without dead ends: 13044 [2020-10-28 13:27:39,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:27:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13044 states. [2020-10-28 13:27:39,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13044 to 13020. [2020-10-28 13:27:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13020 states. [2020-10-28 13:27:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 13754 transitions. [2020-10-28 13:27:39,865 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 13754 transitions. Word has length 1299 [2020-10-28 13:27:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:39,867 INFO L481 AbstractCegarLoop]: Abstraction has 13020 states and 13754 transitions. [2020-10-28 13:27:39,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:39,867 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 13754 transitions. [2020-10-28 13:27:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1437 [2020-10-28 13:27:39,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:39,909 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:39,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:27:39,910 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1699713928, now seen corresponding path program 1 times [2020-10-28 13:27:39,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:39,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174512280] [2020-10-28 13:27:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:40,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1460 [2020-10-28 13:27:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:27:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 13:27:45,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:45,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 941 [2020-10-28 13:27:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:27:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:45,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:45,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:27:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:27:45,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:45,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:27:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:45,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:27:45,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:27:45,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:45,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:45,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:45,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:27:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:45,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:27:45,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:45,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:27:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:45,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:27:45,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:27:45,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:45,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:46,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:27:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:46,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-28 13:27:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:27:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:27:46,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:46,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1204 [2020-10-28 13:27:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:46,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 1382 proven. 169 refuted. 0 times theorem prover too weak. 2037 trivial. 0 not checked. [2020-10-28 13:27:48,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174512280] [2020-10-28 13:27:48,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:48,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:48,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943511218] [2020-10-28 13:27:48,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:48,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:48,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:48,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:48,415 INFO L87 Difference]: Start difference. First operand 13020 states and 13754 transitions. Second operand 7 states. [2020-10-28 13:27:52,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:52,617 INFO L93 Difference]: Finished difference Result 25370 states and 26839 transitions. [2020-10-28 13:27:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:27:52,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1436 [2020-10-28 13:27:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:52,652 INFO L225 Difference]: With dead ends: 25370 [2020-10-28 13:27:52,652 INFO L226 Difference]: Without dead ends: 13032 [2020-10-28 13:27:52,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:27:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13032 states. [2020-10-28 13:27:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13032 to 13022. [2020-10-28 13:27:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13022 states. [2020-10-28 13:27:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13022 states to 13022 states and 13736 transitions. [2020-10-28 13:27:52,888 INFO L78 Accepts]: Start accepts. Automaton has 13022 states and 13736 transitions. Word has length 1436 [2020-10-28 13:27:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:52,890 INFO L481 AbstractCegarLoop]: Abstraction has 13022 states and 13736 transitions. [2020-10-28 13:27:52,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 13022 states and 13736 transitions. [2020-10-28 13:27:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1470 [2020-10-28 13:27:52,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:52,929 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:52,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:27:52,929 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:52,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2056501094, now seen corresponding path program 1 times [2020-10-28 13:27:52,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:52,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547378247] [2020-10-28 13:27:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1497 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:27:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:58,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:58,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:27:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:27:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:58,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:58,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:27:58,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:58,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:27:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:58,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:58,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:27:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:59,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:27:59,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:27:59,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:59,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:59,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:27:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:59,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:27:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:59,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:59,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:27:59,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:59,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 13:27:59,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:59,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:59,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:27:59,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:59,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-28 13:27:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:59,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:27:59,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:27:59,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:59,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-28 13:27:59,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:59,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:59,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:27:59,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:27:59,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:59,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1335 [2020-10-28 13:27:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:59,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:59,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 1317 proven. 318 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2020-10-28 13:28:01,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547378247] [2020-10-28 13:28:01,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:01,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:01,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157843493] [2020-10-28 13:28:01,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:01,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:01,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:01,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:01,344 INFO L87 Difference]: Start difference. First operand 13022 states and 13736 transitions. Second operand 7 states. [2020-10-28 13:28:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:05,848 INFO L93 Difference]: Finished difference Result 25703 states and 27127 transitions. [2020-10-28 13:28:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:28:05,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1469 [2020-10-28 13:28:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:05,878 INFO L225 Difference]: With dead ends: 25703 [2020-10-28 13:28:05,878 INFO L226 Difference]: Without dead ends: 13363 [2020-10-28 13:28:05,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:28:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13363 states. [2020-10-28 13:28:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13363 to 13359. [2020-10-28 13:28:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13359 states. [2020-10-28 13:28:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13359 states to 13359 states and 14076 transitions. [2020-10-28 13:28:06,217 INFO L78 Accepts]: Start accepts. Automaton has 13359 states and 14076 transitions. Word has length 1469 [2020-10-28 13:28:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:06,218 INFO L481 AbstractCegarLoop]: Abstraction has 13359 states and 14076 transitions. [2020-10-28 13:28:06,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 13359 states and 14076 transitions. [2020-10-28 13:28:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2020-10-28 13:28:06,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:06,257 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:06,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:28:06,257 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:06,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:06,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1381349808, now seen corresponding path program 1 times [2020-10-28 13:28:06,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:06,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269084721] [2020-10-28 13:28:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:06,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:11,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:11,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1522 [2020-10-28 13:28:11,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:28:11,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 13:28:11,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:11,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1003 [2020-10-28 13:28:11,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:28:11,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:11,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:11,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:11,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:11,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:11,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:11,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:12,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:12,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:12,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:28:12,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:12,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:12,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:12,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:28:12,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:12,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 13:28:12,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:12,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-28 13:28:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:12,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-28 13:28:12,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:12,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-28 13:28:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:28:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-28 13:28:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:13,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:13,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3602 backedges. 1375 proven. 169 refuted. 0 times theorem prover too weak. 2058 trivial. 0 not checked. [2020-10-28 13:28:15,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269084721] [2020-10-28 13:28:15,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:15,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:15,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807136330] [2020-10-28 13:28:15,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:15,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:15,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:15,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:15,786 INFO L87 Difference]: Start difference. First operand 13359 states and 14076 transitions. Second operand 7 states. [2020-10-28 13:28:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:20,140 INFO L93 Difference]: Finished difference Result 26042 states and 27471 transitions. [2020-10-28 13:28:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:28:20,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1500 [2020-10-28 13:28:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:20,174 INFO L225 Difference]: With dead ends: 26042 [2020-10-28 13:28:20,174 INFO L226 Difference]: Without dead ends: 13365 [2020-10-28 13:28:20,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13365 states. [2020-10-28 13:28:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13365 to 13359. [2020-10-28 13:28:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13359 states. [2020-10-28 13:28:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13359 states to 13359 states and 14072 transitions. [2020-10-28 13:28:20,420 INFO L78 Accepts]: Start accepts. Automaton has 13359 states and 14072 transitions. Word has length 1500 [2020-10-28 13:28:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:20,422 INFO L481 AbstractCegarLoop]: Abstraction has 13359 states and 14072 transitions. [2020-10-28 13:28:20,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13359 states and 14072 transitions. [2020-10-28 13:28:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1509 [2020-10-28 13:28:20,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:20,461 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:20,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:28:20,462 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:20,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1203662048, now seen corresponding path program 1 times [2020-10-28 13:28:20,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:20,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260140022] [2020-10-28 13:28:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:24,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:25,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:25,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1536 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1085 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:28:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:26,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:28:26,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:26,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:28:26,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:26,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:28:26,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:28:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:28:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:28:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:26,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:26,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:28:26,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:26,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:28:26,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:26,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:26,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:26,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:28:26,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:26,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1073 [2020-10-28 13:28:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:26,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:27,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:27,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:28:27,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:27,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-28 13:28:27,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:27,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:28:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:27,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:28:27,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:27,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:28:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:27,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:27,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:27,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:28:27,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:27,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:28:27,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:27,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:28:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:27,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:28:27,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:27,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1374 [2020-10-28 13:28:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:27,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:27,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:27,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:28:27,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:28:27,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:27,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 13:28:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4040 backedges. 1592 proven. 71 refuted. 0 times theorem prover too weak. 2377 trivial. 0 not checked. [2020-10-28 13:28:28,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260140022] [2020-10-28 13:28:28,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:28,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:28,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238443818] [2020-10-28 13:28:28,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:28,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:28,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:28,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:28,675 INFO L87 Difference]: Start difference. First operand 13359 states and 14072 transitions. Second operand 7 states. [2020-10-28 13:28:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:33,329 INFO L93 Difference]: Finished difference Result 30097 states and 31931 transitions. [2020-10-28 13:28:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:28:33,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1508 [2020-10-28 13:28:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:33,367 INFO L225 Difference]: With dead ends: 30097 [2020-10-28 13:28:33,367 INFO L226 Difference]: Without dead ends: 17420 [2020-10-28 13:28:33,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17420 states. [2020-10-28 13:28:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17420 to 17081. [2020-10-28 13:28:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17081 states. [2020-10-28 13:28:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17081 states to 17081 states and 18018 transitions. [2020-10-28 13:28:33,641 INFO L78 Accepts]: Start accepts. Automaton has 17081 states and 18018 transitions. Word has length 1508 [2020-10-28 13:28:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:33,643 INFO L481 AbstractCegarLoop]: Abstraction has 17081 states and 18018 transitions. [2020-10-28 13:28:33,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17081 states and 18018 transitions. [2020-10-28 13:28:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2020-10-28 13:28:33,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:33,679 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:33,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 13:28:33,679 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash 555844252, now seen corresponding path program 1 times [2020-10-28 13:28:33,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:33,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854602927] [2020-10-28 13:28:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:38,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:38,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1604 [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:28:38,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:39,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:39,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:39,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:39,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:39,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:39,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:28:39,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:28:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:39,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:39,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:28:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:28:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:39,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:39,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:28:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:39,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:39,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:28:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:28:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:39,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:28:39,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:28:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:28:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:40,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1073 [2020-10-28 13:28:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:40,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:40,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:40,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:28:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:40,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:28:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1346 [2020-10-28 13:28:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4559 backedges. 1208 proven. 567 refuted. 0 times theorem prover too weak. 2784 trivial. 0 not checked. [2020-10-28 13:28:42,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854602927] [2020-10-28 13:28:42,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:42,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:42,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225215993] [2020-10-28 13:28:42,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:42,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:42,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:42,297 INFO L87 Difference]: Start difference. First operand 17081 states and 18018 transitions. Second operand 7 states. [2020-10-28 13:28:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:46,717 INFO L93 Difference]: Finished difference Result 34503 states and 36414 transitions. [2020-10-28 13:28:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:28:46,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1578 [2020-10-28 13:28:46,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:46,749 INFO L225 Difference]: With dead ends: 34503 [2020-10-28 13:28:46,749 INFO L226 Difference]: Without dead ends: 18104 [2020-10-28 13:28:46,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:28:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18104 states. [2020-10-28 13:28:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18104 to 17755. [2020-10-28 13:28:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17755 states. [2020-10-28 13:28:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17755 states to 17755 states and 18706 transitions. [2020-10-28 13:28:47,033 INFO L78 Accepts]: Start accepts. Automaton has 17755 states and 18706 transitions. Word has length 1578 [2020-10-28 13:28:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:47,034 INFO L481 AbstractCegarLoop]: Abstraction has 17755 states and 18706 transitions. [2020-10-28 13:28:47,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 17755 states and 18706 transitions. [2020-10-28 13:28:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1676 [2020-10-28 13:28:47,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:47,072 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:47,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 13:28:47,072 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:47,073 INFO L82 PathProgramCache]: Analyzing trace with hash 789256198, now seen corresponding path program 1 times [2020-10-28 13:28:47,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:47,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058016420] [2020-10-28 13:28:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:47,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1701 [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5266 [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 774 [2020-10-28 13:28:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:28:52,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:52,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:52,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:52,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:52,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:52,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:52,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:52,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:52,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:28:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:52,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:52,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:52,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:52,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:28:52,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:52,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:28:52,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:52,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:28:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-28 13:28:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:28:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-28 13:28:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:53,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:53,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:28:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 13:28:53,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:53,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:28:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1028 [2020-10-28 13:28:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:28:54,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:28:54,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:28:54,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:54,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1170 [2020-10-28 13:28:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:54,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:28:54,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:28:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1443 [2020-10-28 13:28:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-28 13:28:54,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:54,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0